US1086246A

US1086246A - Woodworking-machine.

Info

Publication number: US1086246A
Application number: US69288412A
Authority: US
Inventors: George A Turner
Original assignee: HOLGATE BROTHERS Co
Current assignee: HOLGATE BROTHERS Co
Priority date: 1912-04-24
Filing date: 1912-04-24
Publication date: 1914-02-03
Anticipated expiration: 1931-02-03

Description

G. A. TURNER.

WOQDWORKING MACHINE. APPLICATION FILED 11.24, 1912.

1,086,246 Patented Feb. 3, 1914.

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WITNESSES INVENTOR ffoflawwi 5 G. A. TURNER.

woonwoakme MACHINE.

APPLICATION FILED APR.24, 1912.

1,086,246. Patented Feb. 3,1914.

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[N VEN TOR G. A. TURNER.

WOODWORKING MACHINE.

APPLICATION FILED APR.24, 1912. 1,086,246.. Patented Feb. 3, 1914.

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UNITED STATES PATENT OFFICE.

GEORGE A. TURNER, 0F KANE, PENNSYLVANIA, ASSIGNOR T0 HOLGATE BROTHERS COMPANY, OF KANE, PENNSYLVANIA.

WOODWORKING-MACHINE.

Specification of Letters Patent.

Patented Feb. 3, 1914.

Application filed April 24, 1912. Serial No. 692,884.

To all whom it may concern:

Be it known that I, GEORGE A. TURNER, a citizen of the United States, residing at Kane, in the county of McKean and State of Pennsylvania, have invented certain new and useful Improvements in Vioodworking- Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

invention relates to an improvement in machines for making brush handles, and it consists in the parts and combinations of parts as will be more fully described and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in plan of my improved machine. Fig. 1 is a view of the handle blank before shaping; Fig. 1 is a view of the same after it has passed through the machine; Fig. 2 is a view in vertical section through the table,

the table supporting frame being in elevation; Fig. 3 is an enlarged view in section of the table; Fig. 4 is a-view in edge elevation of one of the clamps; Fig. 5 is a top plan view of the movable jaw of one of the clamps; Fig. 6 isv a top plan view of one of the lower jaws of a clamp; Fig. 7 is a view in section of the adjustable abutments carried by the lower jaws of the clamp; Fig. 8 is a view of the eccentrics and the washer which forms the fulcrum for the movable jaw of the clamp; Fig. 9 is a view in perspective of the washer; Fig. 10 is a view showing one of the cutters mounted and Fig. 11 is a view of one of the cutting knives.

1 represents a rotating table preferably threaded on shaft 2, which latter is journaled in a frame 3 carried by base 4. Loosely mounted on shaft 2 is the worm wheel 5 meshing with worm-6, on shaft 7, the latter carrying pulleys 8 driven by belt 9. Worm wheel 5 is provided with an upwardly projecting sleeve 5? having clutch teeth at itsupper end adapted to be engaged by similarly shaped teeth on the. sliding sleeve. 5* which latter is keyed to the shaft 2 so as to rotate thereon but is free to he moved vertically to disengage and engage the sleeve 5 Sliding sleeve 5 may be actuatedv by any suitable means, andby disengaging it from sleeve 5 the rotation of the table may i be stopped instantly.

Table l is of generally circular form, but its periphery is cut away or shaped at intervals to conform to the outer contour of the clamps as clearly shown in Fig. 1, and it is provided centrally with a hub 10, and with an upwardly pro ecting flange 11 concentric with the hub. Resting on the upper face of the table 1, is a series of jaws 12, which are retained against displacement by the stud bolts 13, and form the lower jaws of the clamps. The bolts 13, one for each clamp are solidly secured to the table 1, and the outer edges of the jaws 12 conform in contour to the shape of the com leted handle, and form the pattern guides or the cutters as will be hereinafter explained.

Located above the fixed clamping jaws 12 are the movable clamping jaws 14, each of which carries a clamping plate 15 and rubber or other yielding cushion l6 interposed between the jaw 14 and plate 15, the said plate and cushion being secured to the jaw by the bolts 17. Near the inner end of each jaw 14 is a threaded opening for the engagement of the adjusting screw 20, the lower end of which is rounded and rests in a cavity 22 formed in the bottom of its recess in the circular flange 11 on table 1. This flange 11 is recessed or cut away at regular intervals, as shown in Fig. 1, for the reception of the rear or inner ends of the movable jaws of the clamps, the said rear or inner ends of the jaws being much narrower than the outer ends. The adjusting screws 20, which as above explained rest. with their rounded ends within cavities 22, are locked to the upper jaws 14 by the lock nuts 24 and form the fulcrums on which the upper jaws turn. The stud bolts 13 which secure the lower jaws in place, pass loosely through openings in the upper jaws, and each is provided at its upper end with a clamp nut 23, eccentrics 21 21 and collar 26, the latter having a. curved bearing face against which the upper jaw bears. The

eccentrics

21 and 21 mounted on thebolts 13 are intermediate the nut 23 and the collar 26, and one member'21 is keyed to each bolt, the other member 21 being loose on the bolt and provided with oppositcly projecting lever arms 66. The

upper movable jaws of the several clamps are therefore held in place by the stud bolts 13, and by the side walls of the recesses 11, and also by the screws 19. The eccentrics 21 on the bolts 13 bear against the eccentrics 21 keyed to bolt 13 adjacent the outer ends of the jaws, and limit the upward or opening movement of the jaws. The collars 26 on bolts 13 are rounded on their lower faces, and each is provided with a lug adapted to enter a recess 29 in the upper face of jaw 14 for limiting the movement of the collar on the bolt.

The upper jaws 14 are normally held away from the lower jaws b the sprlngs 30, hence it will be seen that W en the jaws are open, and eccentrics 21 turned, the said eccentrics, acting against the eccentrics 21 depress the outer ends of the jaws, thus causing the latter to clamp the blanks 31 solidly in place between the jaws.

'The blank designed for finishing in the machine is shown in Fi 1, and comprises a head 32 and shank or andle 33, the head, or that part thereof intermediate the parallel side edges, being thicker than the shank 32., In order to com ensate for this difference in thickness, t e clamping faces of the upper and lower jaws are cut away (see Figs. 4 and 6) to receivethe head, so that when the blank is placed between the jaws, itwill rest solidly throughout its length on the lower jaw, and be engaged throughout its length by the upper jaw.

Secured to each lower jaw are a series of

stops

34 and 35, each of which is provided with an adjustable abutment, adapted to engage respectively the end and side of the blank and hold same in a position to be acted upon b the cutters. The stop 34 carries the a utment 36, which latter is mounted on the screws 37 and is held in its outward position by the springs 38, while the stops 35 each carry an abutment 39, which in the present instance is a screw, locked in place by the binding plate 40, and locking screw 41. Each abutment screw passes throu h a threaded hole in binding plate 40, which latter isnormally slightly removed from stop 35. Lockin screw 41 passes through a plain-hole'in t e binding late and is screwed'into the stop, and its ead bearing against the binding plate causes the latter to grip the abutment screw and lock same against the possibility of accidental displacement. It will therefore be seen that by adjusting the abutments out or in, any size handle 0 the type shown in Fig. 1, can 'bewaccommodated and held and supported in position to be acted upon by the cutters. The outer faces of the jaws conform to the contour of the finished handle, and the lower edges of the lower jaws, which project outwardl beyond the upper edges of said jaws, as s own in Fig.

2, constitute the guide patterns for the cutters.

The table 1 is provided with a series of these clamps each of which is adapted to receive a blank shown in Fig. 1 The table revolves in the direction of the arrow shown in Fig. 1, and carries the blanks successively to the cutters 42 of which I prefer to use two or more. In the present instance, I have shown three cutters each secured to aspindle, and yieldingly held in contact with the work. Each spindle 43 is journaled in bearings 44 secured to a slide 45 mounted to move vertically in the guide 46 of swinging frame 47 A lug 48 projects from each slide throu h a slot in swingin frame 47 and is provided with a threaded ole for the passage of the threaded end of rod 49, the said rod being supported by and journaled in the bearing 50 on. swinging frame 47 It will therefore be seen that by turning rod 49 by means of a wrench or other tool, the slide carrying the spindle may be adjusted up or down so as to brin the cutters in proper positions with relation to the blank to be cut.

Journaled on the upper end of each slide 45 is an adjusting-screw 51 the threaded portion of which engages threads in an opening in the depending lip of bracket 52, mounted to slide on the upper end of slide 45. The opposite end of bracket 52 is provided with a cylindrical opening for the passage of the spindle 43, and carries the pattern follower 53 (see Fig. 3), which has ball bearings, and is designed to engage the pattern guide edge of the lower jaws of the clamps. If desired the bracket may carry the bushing 54, which however is considerably larger than the spindle 43, so as to permit of the necessary adjustment of the pattern follower with relation to the cutters. These brackets are secured to the top of the slides 45 by the screws 55, which latter pass through elongated slots in the brackets and operate to lock the bracket solidly to the slide. By loosening up on screws 55 the brackets will be free to be moved in or out and thus adjust the pattern follower in proper position with relation to the cutters. Thesefollowers 53 move in contact with the lower edge of the lower clamping jaws which constitute the pattern guides, and as such follower bears a fixed relation to its cutter, and is free to move horizontally toward and away from the axis of rotating table 1, it will be seen that'the cutters will follow the contour of the pat tern guides and shape the exposed side of the handle blank toconform therewith.

' The slides 45 are mounted in the swinging frame'47, and the latter are hinged at one side edge, as at 56, to the semi-circular frame 57, which latter is a part of, and is secured to, the main frame of the machine. Projecting rearwardly from the rear 'faces of the swinging frame 47 are the arms 58, which latter are connected at their free ends to the springs 59, secured at their free ends to frame 57. These springs yieldingly hold the pattern follower 53 in contact with the outer edges of the pattern guides, and the cutters 42 in contact with the side edges of the blank 31--32, so that the cutters reproduce on the blank, the curve of the outer side of the pattern guide.

Slides 45 are mounted in the guides integral with the swinging frame 47. Each swinging frame has two arms 47 each provided at its free end with a bearing 47 the upper ones of which are adapted to receive the pintles 47 and the lower ones the pintles 47 The up er pintles 47 are screwed into brackets on Frame 57 and are'provided with plain ends to engage bearings 47*, while the lower-pintles 47 d are simply headed pins held in brackets on frame 57 by the set screws 57. I prefer to interpose bronze collars 57 with hardened balls between them, intermediate the lower bearing 47 and its support, so as to provide for easy swinging movemtnt of the several frames. While I have shown three such frames, each carrying a cutter I may use only two or more than three, hence I would have it understood that the exact number of cutters used is not essential.

In the operation of the machine, the table turnsin the direction of the arrow shown in Fig. 1, slowly enough for an operator standing at the front of the machine to take out and replace a blank, and it requires two revolutions of the table to finish both edges of a blank. As the table revolves, a blank, shaped as shown in Fig. 1, is introduced between each pair of clamping jaws and against the abutments 36 and 39, and after each is so placed, it is locked temporarily by the rod 60. These rods, one for each pair of clamping jaws, are each mounted to move vertically in the upper jaw of its clamp. It extends through its jaw and is held upwardly by the spring shown in Fig. 4. Secured to the top of the jaw adjacent rod 60 is the post 61 carrying the block 62 which latter is yieldingly forced downwardly by the spring 63, and journaled on the block 62 is the lever 64 having a cam end 65, which is located in a position to engage the upper protruding end of rod 60. After the blank has been placed in its proper positionbetween the jaws, lever 64 is thrown up and its cam end 65 coming in contact with the upper end of rod 60 forces the latter downwardly into contact with the blank, the block 62 giving or yielding sufliciently for this purpose. The blank is thus temporarily secured in place against the possibility of accidental displacement, and is subsequently firmly locked by the eccentric 21 on bolt 13.

This eccentric is as before explained provided with the double armed lever 66 which, as the table is rotated, comes in contact with the stop 67, shown in Fig. 1, and turns eccentric 21. This movement of the eccentric firmly locks the upper jaw of the clamp in its closed position and. clamps the blank between the two jaws. Just after the eccentric has been turned to lock the blank between the jaws of the clamp, the upstanding arm 64 of the temporary clamp comes into contact with the stop 67* (see Fig. 1), and is thrown back to its normal position. The jaws with the blank firmly clamped and supported by lateral and end abutments, now move into contact with the cutters 42, the first of which removes part of the material of the blank and the others finish it. In some instances, particularly with small blanks or blanks made of soft wood, two spindles and cutters will be ample, in which event the third cutters may be removed. After the blank has passed the cutters, the opposite end of arm 66 on eccentric 21, comes in contact with the stop 68 (see Fig. 1), which turns eccentric 21 in a direction to release the upper aw of the clamp, thus permitting the latter to assume the position shown at the left of Fig. 2, and leaving the blank free to be grasped and removed.

From the foregoing it will be seen that only one side of the blank is operated upon at a time, and after one side has been shaped the blank is removed and replaced so as to expose its opposite side edge to the cutters. The blanks at the'start are as shownin Fig. 1. After one revolution of the table they are shaped at one side as shown in dotted lines in Fig. 6, and after the second revolution of the table, the handle is shaped'as shown in Fig. 1". I

In the operation of the machine,]the operator stands at the front of the table and inserts the blanks between the jaws of theoperator then withdraws same turns it and again temporarily clamps it,'after which the operation is repeated. As it now comes within reach of the operator he withdraws it and inserts anew blank.

In the present-instance I have shown the cutter spindles all rotated by a single belt 69, which passes, as shown in Fig. 1, around pulleys on the several cutter spindles and around the sheaves 70 carried by the frame, a take-up or tightener '71 being employed for taking up the slack and compensating for the movements of the spindles toward and away from the axis of the table.

It is evident that many slight changes might be resorted to in the relative arrangement of parts shown and described without departing from the spirit and scope of my invention. Hence I would have it understood that I do not wish 'to confine myself to the exact construction and arrangement of parts shown and described, but, 1

Having fully described my invention what I claim as new and desire to secureby Let clamping jaws, manually operated means for temporarily holding the blanks within the clamps, and automatically actuated means for first closing said jaws onto the blanks prior to the engagement of the blanks by the cutters and for o ening said jaws to releasethe blanks after t ey have been acted upon by the cutters. v

3. The combination of a rotatin table, a series of fixed clamping jaws ra ially arranged thereon, a movable clamping jaw located above and cooperating with each fixed jaw, each movable 'jaw' being ful} crulned at its inner end and free at its outer end, a bolt for each pair of jaws,'each bolt being secured to the table and passing loosely through its upper jaw, springs bearing against the upper jaws for normally holding them away from the fixed jaws, an

eccentric'one each bolt for closing the mov- -able jaw, and automatic means for rotating the eccentrics whereby the movable-jaws will be closed onto the blanks and subsequently opened to release the blanks.

4. The combination of a rotatin table, a

series of fixed clamping jaws ra ially ar ranged thereon, a movable clamping jaw over each fixed jaw, an adjustable fulcrum for each fixed jaw at the inner end of. the latter, an eccentric engaging ithe'upp'er face of each movable jaw for forcing the free end of the latter toward thefixed jaw,-and automatic means. forrotating said eccentrics whereby the movable jaws will be closed onto the blanks and subsequently opened to release the blanks. f j i 5. The combination of a rotating table, a series of radially disposed fixed clamping jaws thereon, a movable clamping jaw for each fixed jaw each movable jaw being fulcrumed at its inner end, a bolt for each pair of jaws, the bolts being fixed to the roeaeee table and passing loosely through the movable jaws, automatically actuating means carried by said bolts and engaging the jaws for moving the latter to clamping position, and means for subsequently moving the movable jaws to the open position.

6. The combination of a rotating table, a

series of radially disposed fixed jaws thereon, an upper-jaw for each fixed jaw, each upper jawibeing fulcrumed at its .inner end,

a bolt passing upwardly from each fixed jaw through its upper jaw, the latter being loose on the bolt, an eccentric mounted on each bolt for closing the movable jaws onto the-blank, means for yieldingly holding the outer ends of the jaws apart and means for automatically actuating the eccentrics to close'and release the. movable jaws.

7. The combination of-a rotating table, a series of radially disposed fixed clamping jaws, a cooperating movable jaw for each fixed jaw, each movable jaw-being fulcrumed at its rear and comprising upper and lower members and an intermediate yielding cushion, a bolt passing loosely through each movable jaw, means carried by said bolt for actuatingthe movable jaw, and means automatically actuating said last mentioned means to first clamp and then release the blank once at each revolution of the table.

8. The combination of a rotating table having a series of radially disposed fixed clamping jaws, a coiiperatlng movable jaw for each'fixed jaw, means supporting eac movable jaw at its inner end, a bolt passing loosely through each movable jaw, an cecentric carried by each bolt and bearing against its movable-jaw, and adapted when actuated in one direction tolclose onto a blank resting on the-lower jaw, and springs tending to move the movabl' jaws away from the lower jaws. 7 I

9. The. combination of a rotating table, a series offradially disposed fixed clamping jaws on the upper face thereof, bolts pro-- jecting-from said table up through the jaws, upper movable jaws mounted on said bolts,

springs tending to normally hold the outer ends of said movable jaws away from the lower jaws, an eccentric on each bolt for forcing the outer end of its co'tiperating upper-jaw toward its lower jaw, and means for automatically actuating said eccentric to first close and then release the upper clamping jaw at each revolution of the table. 10. The combination of a rotating table having an upwardly projecting flange concentric with the axis of the table and provided with recesses, a series of lower jaws radially disposed on said table adjacent the periphery of the latter, bolts projecting upwardly from the table, upper jaws mounted on said bolts with their inner ends fulcrumed in the recesses in the flange, springs tending to force the outer ends of said upper jaws away from the lower jaws,and eccentrics carried by the bolts and automatically actuated during the movement of the table for moving the outer ends of said upper jaws toward the lower jaw.

11. The combination of a rotating table a series of radially disposed removable clamping jaws thereon, and adjustable abutments intermediate the jaws and secured to and carried by one of them.

12. The combination of a rotating table, a series of radially disposed removable clamping jaws thereon, a series of adjustable abutments secured to the lower jaw of each clamp for supporting the blank against displacement, and means for automatically opening and closing'said jaws.

13. In amachine for making brush handles, the combination of a rotating table, a series of radially disposed removable clamping jaws thereon, the meeting faces of'both jaws of each pair being cutaway to receive the head of the handle blank, adjustable abutments secured to and carried by the lower jaw for supporting the handle blank against lateral displacement, and means for opening and closing said jaws.

14. The combination of a rotating table, a series of radially disposed fixed clamping jaws thereon, a movable clamping jaw for each fixed jaw, an adjustable screw carried by the inner end of each movable jaw and forming the fulcrum for the latter, and automatically actuated means engaging said jaw intermediate its ends for moving said jaw to its clamping position and subse quently releasing the same.

15. The combination of a rotating table having an upwardly projecting flange concentric with the axis of the table and provided with recesses, a series of lower jaws radially disposed on said table adjacent the periphery, bolts projecting upwardly from the table, upper jaws having openings for the passage of said bolts, the inner ends of said upper jaws resting in the recesses in the flange and retained against lateral displacement by the walls thereof, a screw secured ing witnesses.

GEORGE A. TURNER. Witnesses:

Jim. 0. LONGSHORE, J. E. HENRETTA.