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1. 发明专利

GB417686A Milling machines and like machine tools 未知
公开(公告)号：GB417686A
公开(公告)日：1934-10-10
申请号：GB1906033
申请日：1933-07-05
申请人： ALFRED HERBERT , ARTHUR HAROLD LLOYD , CHARLES HARRIS JINMAN
IPC分类号： B23C9/00
摘要： 417,686. Milling-machines. HERBERT SIR A., LLOYD, A. H., and JINMAN, C. H., c/o Herbert, Ltd., A., Canal Road, Edgwick, Coventry. July 5, 1933, No. 19060. Addition to 393,380. [Class 83 (iii).] A milling or like machine tool according to the parent Specification is modified by the provision of means associated with the table and spindle drive whereby the spindle is automatically disconnected at a predetermined table position, preferably at or near the end of its forward travel so as to prevent the work being damaged by the tool during the return movement. As applied to the machine shown in Figs. 7-10 of the parent Specification, the spindle drive includes a clutch 12 operated through a lever 15 connected with lost motion at 16 to a rod 17 hinged to a crank 18 on the hand control lever 14. To engage the clutch the hand lever is raised, whereupon the end 19 of the lever 15 is held against the force of a disengaging spring 21 by a latch lever 20 which is biassed into latching position by a spring 24. When the hand lever is released the lost motion connection allows it to return towards the clutch disengaging position wherein a cam portion 22 engages the top of the latch part 23. A slight pressure on the hand lever moves the rod 23 downwards and disengages the latch, whereupon the spindle clutch is disengaged and a brake (not shown) applied to the spindle. For automatic release of the latch mechanism a Bowden cable 25 is actuated from a striker 28 on the table through a bell crank 27, this action being preferably timed to occur just before the switching means disconnects the feed drive to allow the motor to return the table so that the work cannot be damaged. In a modification, Fig. 4, the rod 17 is moved to the left by the hand control lever to engage the clutch, which is held in against the pressure of a disengaging spring 21 by a pivoted latch 20, the latch being disengaged against a spring 24 either by the hand lever acting through the boss 29 on the rod 23 or by Bowden cable 25 operated automatically from the striker 28 on the table.

2. 发明专利

GB416153A Electrically-operated chucks for machine tools 未知
公开(公告)号：GB416153A
公开(公告)日：1934-09-13
申请号：GB1695533
申请日：1933-06-14
申请人： ALFRED HERBERT , ARTHUR HAROLD LLOYD , CHARLES HARRIS JINMAN
IPC分类号： B23B31/28
摘要： 416,153. Chucks. HERBERT, SIR A., LLOYD, A. H., and JINMAN, C. H., c/o Herbert, Ltd., Canal Road, Edgwick, Coventry. June 14, 1933, No. 16955. [Class 83 (iii).] In an electrically operated chuck the jaws are actuated through bell-crank levers or other means, (not shown), controlled by a push rod 31 secured to a nut 28 splined at 30 within a lathe &c. spindle 12. The nut 28 is engaged by a screwed spindle 29 rotatably mounted within the spindle 12 by means of roller thrust bearings 26 located between roller journal bearings 27 and carrying an annular gear 24 meshing with floating pinions 22 which also engage an annular gear 23 secured to the spindle 12 through a casing 13. The stator casing 15 of an electric motor is secured to the casing 13 to rotate with the spindle 12 whilst the rotor 19 is mounted in bearings 20 in the casing and carries a pinion 21 engaging the pinions 22. The annular gears 23, 24 have slightly different numbers of teeth so as to provide a reduction ratio of about 70 to 1. The spindle 29 has a quick-pitch screw thread of about three threads per inch and is non- reversible so as to maintain the clamping pressure on the jaws. To provide a yielding telescopic connection between the push-rod 31 and the jaws, a sleeve 37, Fig. 2, may be attached to the rod 31 and provided with a collar 38 engaging springs 39, 41. These springs act on a push-rod 36 rigidly connected to the jaws, through a collar 40 on the rod and a sleeve 42 secured to the rod by a pin 43 slidable in a slot 44 in the rod 31. When applied to a small lathe, the bearings 27 are replaced by a plain journal bearing and the bearings 26 by two ball thrust bearings acting on opposite sides of a collar on the spindle 29 located at one end of the plain bearing, and within the bearing for the lathe spindle 12. Current may be supplied to the motor through brushes 32 and slip-rings 33, arranged either as shown or on the periphery of the stator, control being effected by a switch on the lathe headstock connected with electromagnetic contactors on an auto-transformer arranged away from the lathe. The tappings of the transformer maybe used to vary the engagement pressure of the jaws on the work. Alternatively, a polyphase resistance in series with the stator winding may be used, or the motor might be a series-wound direct current motor controlled through a variable resistance. The motor is controlled by a double-acting switch which is biassed to the " off " position so that it may be held by the operator in either position until the jaws have either opened or closed and the motor has stalled, whereupon on release of the switch it returns to the " off " position.

3. 发明专利

GB433378A Light drilling machines 未知
公开(公告)号：GB433378A
公开(公告)日：1935-08-14
申请号：GB487234
申请日：1934-02-14
申请人： ALFRED HERBERT , ARTHUR HAROLD LLOYD , CHARLES HARRIS JINMAN
IPC分类号： B23B39/00
摘要： 433,378. Drilling-machines. HERBERT, SIR A., LLOYD, A. H., and JINMAN, C. H., c/o Herbert, Ltd., Canal Road, Edgwick, Coventry. Feb. 14, 1934, No. 4872. [Class 83 (iii)] A drilling-machine has the spindle, which is driven by a rotary air motor, fed by mechanical means engaging a sleeve which is slidably mounted in a stationary part of the machine and supports the spindle in its interior. The drilling-spindle 13 is mounted by means of ball bearings 29, 30, the lower one of which is spring-biassed to take up wear, in a sleeve 16 which slides vertically in the machine frame. The sleeve is normally forced into its uppermost position by a bridle-ended lever 18, the plain end of which is pulled down by a tension spring 21. The spindle is fed downwardly by a hand lever 25, projections 23 on the yoke of which engage a collar 24 on the sleeve ; a fine feed being obtained through a screw stop 26 and a lever 27 fast on the pivot of the lever 18, depth of feed being limited by an adjustable lock nut 28. The spindle is driven by compressed air, a rotor 32, Fig. 3, being fast on the spindle and connected to an air supply through a flexible pipe 34 and control chamber 35. A pressure gauge is fitted to the control chamber with a dial showing the spindle speeds which are stated to be substantially proportional to the pressure supplied. According to the Provisional Specification feed of the spindle sleeve may be effected by means of a wheel which is biassed into frictional contact with the sleeve.

4. 发明专利

GB393380A Milling machines and like machine tools 未知
公开(公告)号：GB393380A
公开(公告)日：1933-06-08
申请号：GB617932
申请日：1932-03-01
申请人： ALFRED HERBERT , ARTHUR HAROLD LLOYD , CHARLES HARRIS JINMAN
IPC分类号： B23C9/00
摘要： 393,380. Milling-machines. HERBERT, SIR A., LLOYD, A. H., and JINMAN, C. H., Canal Road, Edgwick, Coventry. March 1, 1932, No. 6179. [Class 83 (iii).] Milling and like machines, wherein the table is automatically fed as by a worm connected with the spindle drive, have an arrangement wherein idle operations can be speeded up. The slidable member is driven by an electric motor with a control switch interlocked with the feed drive so that the motor cannot be energized for reverse operation so long as the feed drive is in operation. This may apply to the forward operation of the motor as well, or the feed drive may incorporate a one-way driving device or free-wheel. The interlocking may be mechanical or electrical and the motor is preferably reversible. When the motor is reversible the control switch can be set so that the latter will be automatically returned as soon as the feed drive is disconnected. In the case of a traverse-screw milling-machine,. Fig. 1, a control member in the form of a handle 2 can be raised to carry the driving worm into mesh to effect the automatic feed of the table as is well known. When raised the handle is retained till manually released by a pressbutton 4 or until an adjustable lug 5 on the table engages a releasing catch 6 on the stationary base 7 when milling is completed. A switch 8 is associated with the worm so as to be closed when the worm is disconnected and opened when the worm is in mesh. A stop and reversing main control switch 9, Fig. 2, is mounted on one side of the stationary base. The worm-controlled switch 8 is connected in series with the main control switch so that the motor cannot be energized as long as the feed drive is connected. An operating member 13 of the main control switch can be moved to three positions-forward, reverse, and off, Fig. 3 (a). Adjustable lugs 15, 16, 17 automatically operate the member 13 for slow feed, rapid feed or stop. Apart from automatic control the operator can move the main control as desirable to move the table in either direction rapidly provided the feed drive is disconnected. In some cases the table can be operated manually by a hand-wheel 18 adapted to drive a clutch and bevel gears in a casing 19. The first movement of the hand-wheel in a clutchengaging direction opens a switch 21 in circuit with the motor. This switch is in series with the main control 9. Normally after completion of the feed the table is returned automatically but the operator can prevent it by moving the hand-wheel to open the switch 21. In practice an electromagnetic contactor reversibly controlled by the series switches would be used. In a modification, Fig. 5, a power traverse is operated only manually and a motor 11 (reversible) is mounted on the left hand and the main switch is operable by a member 13 through a connecting-rod 24. A spring (not shown) tends to keep the operating handle 13 in the off position. A spring-loaded plunger carried by the handle co-operates with two collars 25 on the connecting-rod so that the handle can be fully raised only when the operating member 13 is in the off position. In a further modification, Fig. 7, provision is made for automatic control of the power traverse in both directions and for introducing power traverse intermittently during forward feed where sections in casting need no machining. A double-acting switch is used having a second member 8a to close contacts when the switch 8 is opened and vice versa. In this case there is no main control switch 9, 13, but in the position of the latter there is a normally closed limit switch 26. At the rear of the machine there are stop and start switches co-operating with adjustable stops on the table. The control circuit is shown at Fig. 10. In the loading position the hand-wheel switch 21 is closed and the feed drive disconnected. The switch 8 is closed and 8a open. The contactors are both open, bridging the lower contacts 32, 33. The stop switch 27 is closed and the start 28 is held closed by one of the adjustable stops and the limit switch is held open by the limit stop 16. The two parallel control circuits are then open at the switches 8a, 26 and the motor is de-energized. When the work is set up the operator completes the feed drive by raising the control 2 opening the switch and closing 8a, completing a circuit from the lead 31 through contacts 33 of the reverse contactor 23b through the stop 27, start 28 and handwheel switch 21 exciting the coil of the forward contactor 23a which therefore operates. As the worm has been raised to engage the worm wheel, the automatic feed drive is provided with a one-way device and free-wheel. After a determined forward movement an adjustable stop operates a stop switch 27 opening the circuit and de-energizing the forward contactor. Thus the automatic feed drive is effective whilst a milling operation is being carried out. When this is finished another of the adjustable stops engages the start switch 28 and thus operates the table again, and so on.

5. 发明专利

GB387494A Electrically-driven machine tools 未知
公开(公告)号：GB387494A
公开(公告)日：1933-02-09
申请号：GB158332
申请日：1932-01-19
申请人： ALFRED HERBERT , ARTHUR HAROLD LLOYD , FREDERICK JOSEPH OLIVER COXON , CHARLES HARRIS JINMAN
IPC分类号： B23B47/14 , B23Q5/10
摘要： 387,494. Motor driving-arrangements. HERBERT, SIR A., LLOYD, A. H., COXON, F. J. O., and JINMAN, C. H., c/o Herbert, Ltd., Canal Road, Edgwick, Coventry. Jan. 19, 1932, No. 1583. [Class 35.] A drilling or tapping machine is driven by a constant-speed electric motor mounted above and upon a change-speed gear-box of the slidable gear type comprising a main shaft directly coupled to the motor shaft and a lay shaft coupled solely by a gear pair to the main spindle, the motor being controlled by a drum switch giving forward, stop and reverse movements. The driving shaft of the motor 2 is .direct-coupled to the shaft 7 of the four-speed gear-box 3, the speeds being selected by a hand-wheel 5, and the tool spindle is driven from the lay shaft by a gear pair 9.

6. 发明专利

GB449669A Machines for tapping screw-threads 未知
公开(公告)号：GB449669A
公开(公告)日：1936-07-01
申请号：GB167736
申请日：1936-01-18
申请人： HERBERT LTD A , ARTHUR HAROLD LLOYD , CHARLES HARRIS JINMAN
IPC分类号： B23G1/16
摘要： 449,669. Tapping. HERBERT, Ltd., A., LLOYD, A. H., and JINMAN, C. H., Canal Road, Edgwick, Coventry. Jan. 18, 1936, No. 1677. [Class 83 (iii)] In a tapping-machine wherein the spindle is rotated by an electric motor controlled bv forward and reverse contactors which are interlocked to prevent both being energized at the same time, switching means are provided which are automatically operative, on completion of a tapping operation, to energize the reverse contactor. In a machine wherein the spindle is fed to the work by hand and returned by a spring a rod 16 slidable parallel to the spindle carries a block 19 which maintains the rod in the neutral position shown in Fig. 3 by means of levers 20 and a spring 21. The ends of a notch on the block engage levers 23, 24 which operate switches 26, 27, respectively for energizing the forward and reverse contactors 31, 32, Fig. 4. Both switches may be maintained open by a cam 29 on a hand lever. To start the machine the hand lever is moved from the stop position to the start position, thereby moving the cam 29 into the position shown in Fig. 3. The surfaces 36 of the cam allow the forward switch 26 to close before the reverse switch 27, thereby energizing the forward contactor 31 through a switch 34 coupled to the reverse contactor. As the contactor 31 closes, a switch 33 coupled thereto is opened to prevent energization of the reverse contactor 32. On completion of the tapping operation a collar on the spindle engages a lever to move the rod 16 axially upwards and open the switch 26, de-energizing the contactor 31 and allowing the switch 33 to close, whereupon the contactor 32 is closed and the motor reversed, When the spindle reaches the upper limit of its travel another collar thereon moves the rod 16 downwards to open the switch 27 and de-energize the contactor 32, thereby closing the switch 34 to rotate the spindle in the forward direction again. The rod 16 may be moved by hand to reverse the driving motor at any time, or to cause a quick stoppage by giving a temporary reversal thereto. In a machine having an automatic power feed, the spindle is driven from the motor through pick-off gears which also drive, through a reduction gear, a yielding clutch and further pick-off gears, a rack on the spindle housing. The spindle has axial play in the housing and is fed through a helical spring so that the feed may be slightly in excess of the tapping feed. A pair of cams 41, 42, Fig. 5, are driven by the feed mechanism and actuate the switches 26 27 similar to the switches 26, 27 in Figs. 3 and 4. The operation of the machine is similar to that of the hand fed machine except that a hand controlled switch 30a, Fig. 5, is provided in parallel with a switch connected to the forward contactor 31, the switch 30a being closed momentarily by the operator to energize the forward contactor and this circuit being maintained by the second switch until reversal takes place. When the spindle returns to its upper position the second switch remains open and brings the motor to rest. The invention enables an operator to control a number of machines or a single machine with a number of independent spindles.

7. 发明专利

GB411766A Rotary electric switches 未知
公开(公告)号：GB411766A
公开(公告)日：1934-06-14
申请号：GB3531933
申请日：1933-12-15
申请人： ALFRED HERBERT , ARTHUR HAROLD LLOYD , CHARLES HARRIS JINMAN
IPC分类号： H01H9/26
摘要： 411,766. Locking switches. HERBERT, SIR A., LLOYD, A. H., and JINMAN, C. H., c/o Herbert, Ltd., Canal Road, Edgwick, Coventry. Dec. 15, 1933, No. 35319. [Class 38 (v).] A multi-position rotary switch has a mechanical and electrical interlock so that the switch cannot be actuated until the circuit through it has been broken. The operating spindle 11 of the rotary switch (not shown) is rigidly connected to a plate 14 to which is pivoted at 16 a handle 15 having a backward extension carrying a bar 18, to one end of which is connected a plunger 19 urged by a spring 21 into engagement with one of a series of holes 22 in a fixed plate 12. The other end of the bar 18 is loosely connected to a plunger 20 carrying an insulated contact 24 urged by a spring 28 into bridging engagement with a pair of arcuate contacts 25, 26. A pair of stops 30, 31 limit the pivotal movement of the handle 15. To operate the rotary spindle 11, the handle 15 is first depressed. This breaks the circuit at 24, 25, 26 of an electromagnetic contactor controlling the current through the switch. The plunger 19 is withdrawn from locking engagement with the hole 22 and the handle 15 may then be moved to rotate the spindle 11 to the new switching position. The handle 15 is then lifted by the springs 21, 28 to lock the spindle by means of the plunger 19 and the circuit is then completed by means of the contacts 24, 25, 26. This avoids sparking at the rotary switch contacts. A roller 34 on a spring biassed pivoted arm 35 engages notches in a member 32 fixed on the spindle 11 to assist in locating the switching positions. Specification 387,495, [Group XXXV], is referred to.

8. 发明专利

GB641629A Electrically-operated chucks for machine tools 未知
公开(公告)号：GB641629A
公开(公告)日：1950-08-16
申请号：GB525748
申请日：1948-02-23
申请人： HERBERT LTD A , ARTHUR HAROLD LLOYD , CHARLES HARRIS JINMAN
IPC分类号： H02K7/06
摘要： 641,629. Chucks. HERBERT, Ltd., A., LLOYD, A. H., and JINMAN, C. H. Feb. 23, 1948, No. 5257. [Class 83 (iii)] Chuck-operating mechanism having a reversible electric motor connected to operating means through speed reduction gearing and an irreversible device is characterized by two voltage circuits sequentially connected to the motor so as momentarily to supply a high voltage for initiating movement and then to supply a lower voltage for completing movement of the chuck parts. A reversible electric motor 14 supplied from slip-rings 15, Fig. 1, drives, through a pinion 18 and planet gear 19, a pair of internally-toothed wheels 20 and 21 having a small difference in their number of teeth. Reduced motion is transmitted from the wheel 21 to a coupling member 22 which has a lost-motion connection with an internal coupling member 25 connected to a screw 30 which operates a non-rotatable slidable nut 31 for a chuck draw-rod 32. The motor may alternatively be connected direct to supply lines 34, Fig. 4, through switch 37 or through adjustable resistances 36 and switch 35. A single control shaft is provided for the two switch parts, Figs. 6 and 7 and when turned anti-clockwise the bridge member 41 on a spring-biassed rockable element 42 first engages the co-operating contacts to give a relatively high starting voltage and, just before the bridge member 44 of the switch 35 engages the contacts for the lower adjustable working voltage, switch member 41 passes over its dead centre position and breaks the circuit for the direct supply from the mains. Specification 416,153 is referred to.

9. 发明专利

GB488251A Power control of doors 未知
公开(公告)号：GB488251A
公开(公告)日：1938-07-04
申请号：GB3481337
申请日：1937-12-16
申请人： HERBERT LTD A , ARTHUR HAROLD LLOYD , CHARLES HARRIS JINMAN
IPC分类号： E05F15/14
摘要： 488,251. Door - operating appliances. HERBERT, Ltd., A., LLOYD, A. H., and JINMAN, C. H. Dec. 16, 1937, No. 34813. [Class 65 (i)] Sliding doors 11, 12 which are biassed towards closing as by weighted cords 23a, 23b are opened by a reversible electric motor 17 driving an endless cable &c. 19 carrying abutments 22 adapted to engage brackets 21 on the door. When the doors are fully open, a limit switch OLS stops the motor, and the doors are held open by the motor or its transmission against the closing bias. The doors are closed by reversing the motor and allowing the bias to operate. If one of the doors has a wicket gate 25, a switch WS thereon prevents closure of the motor circuit if the wicket is open. The doors may be suspended from an overhead rail by rollers 24. A time-lag device may be used to cause the motor to operate for closing after the doors have been open a certain time. When the doors are closed, a limit switch CLS cuts off current. The motor circuit may be controlled by ground abutments operated by a vehicle.

10. 发明专利

GB387495A Electrically-driven machine tools 未知
公开(公告)号：GB387495A
公开(公告)日：1933-02-09
申请号：GB158432
申请日：1932-01-19
申请人： ALFRED HERBERT , ARTHUR HAROLD LLOYD , FREDERICK JOSEPH OLIVER COXON , CHARLES HARRIS JINMAN , ERNEST WILLIAM TIPPLE
IPC分类号： B23B45/00 , B23B45/02 , B23B47/14
摘要： 387,495. Induction motors ; driving- arrangements. HERBERT, SIR A., LLOYD, A. H., COXON, F. J. O., JINMAN, C. H. and TIPPLE, E. W., c/o Herbert, Ltd., Canal Road, Edgwick, Coventry. Jan. 19, 1932, No. 1584. [Class 35.] Drilling, tapping, and other machine tools are driven by reversible, variable-speed electric motors with a pole-changing device of the faceplate type mounted on top of the motor and the reversing switch disposed at the back of the motor but operable from the front thereof. A pole-changeable, squirrel-cage induction motor 2 drives the spindle 3 of a machine headstock either directly or through a two-speed gear as shown ; the pole-changing device 6 which is of the faceplate type is mounted above the motor and is controlled by an arm 11, the lower end of which co-operates with a line of " speed " numbers. A separate forward, stop and reversing switch 16 is provided which enables the motor to be reversed when it is desired to bring it quickly to rest after running in the forward direction ; this switch is placed at the back of the motor but the controlling lever 19 is arranged at the front thereof.

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