US692757A

US692757A - Stapling-machine.

Info

Publication number: US692757A
Application number: US1605100A
Authority: US
Inventors: Everett A Barber
Original assignee: STANDARD RIVET CO
Current assignee: STANDARD RIVET CO
Priority date: 1900-05-09
Filing date: 1900-05-09
Publication date: 1902-02-04
Anticipated expiration: 1919-02-04

Description

' Patented Feb. -4, I902. E. A. BARBER.

STAPLING MACHINE.

(Application filed May 9, 1900.) I (No Model.) 5 Shuts-Sheet l.

.Zfla'ah $565: w Inve r0607:- M w z d. 0W

I I v Cfi-orneys.

No. 692,757. Patented Feb. 4, I902.

a E. A. BARBER.

STAPLING MACHINE.

- (Application filed May 9, 1900.)

(No Model.) 5 Sheets-Sheet 2.

Zl/v'tnsses. i Inventbrx".

No. 692,757. Patented Feb. 4, 1902.

, E. A. BARBER.

STAPLING MACHINE.

(Application filed May 9, 1900.)

(No Model.) 5 Sheets-Sheet 3,

Zflz'zn eases. Ihve nzo 7'.- @MM Man: 9% 0M 0M0. f5. d/a MM 9560 ey a.

No. 692,757.. Patobted Feb. 4, I902.

. E. A. BARBER.

STAPLINB MACHINE.

(Application filed my 9. 1900.) (lo Model.)

5 Shouts- Sheet 5,

fllllllllll 2060263665.- jnvenfo r, ar J4, awa b o ttorne ys,

UNITED STATES PATENT OFFICE.

EVERETT A. BARBER, OF QUINCY, MASSACHUSETTS, ASSIGNOR TO THE STANDARD RIVET COMPANY, OF BOSTON, MASSACHUSETTS, A coa- PORATION OF NEW HAMPSHIRE.

, $TAPLING- SPECIFICATION. forming part of Letters Patent No. 692,757, dated February 4., 190a.

- Application filed May 9, 1900. Serial. N0. 16,051. (No model.)

T on whom it may concern:

Be it known that I, EVERETT A. BARBER, a citizen of the United States,residingatQuincy, in the county of Norfolk, State'of Massachusetts, have invented a'certain new and useful Improvement in Staple-Setting Machines, of which the following is a specification, reference being had therein to the'accompanying drawings.

My invention has for its object to provide a simple, durable, and efficient machine for setting staples.

In the following description, taken in connection with the accompanying drawings, I have set forth a machine embodying my invention, and in the claims at the end hereof I have pointed out and clearly defined the novel features thereof. 7

In the drawings, Figures 1 and 2 are side elevations of the machine viewed from opposite sides thereof. In said Fig. 2 the hopper 21 is removed. Fig. 3 is a plan view of the machine, the cover 166 of the hopper being thrown back. Fig. 4 is an enlarged sectional detail showing a locking device for the clutch mechanism. Fig. 5 is a sectional view,partly in elevation, of the driving and guiding mechanism enlarged, thesection being on line 5 5, Fig. 6. elevation, of the parts shown, Fig. 5, the section being on line 6 6 of Fig. 5. section on line 7 7, Fig. 5. tion on line 8 8, Fig. 3. tive of a staple such as the machine shown is adapted to set.

The machine is intended to be placed on a suitable bench or support, (indicated at A.) The frame is shown at B andis provided with three projecting arms. The arm 1 is yokeshaped and projects rearwardly in two branches, serving to support the driving-shaft 4 at two points, as indicated. The arms2 and 3 project forwardly, the arm 2 being underneath the arm 3 and serving to support the clenching-die, while the arm 3 supports the driver and guideway or throat, as also the Fig. 8 is a secraceway and connected mechanisnnby means lower end of a slide 15. plates 16 and 17 are provided to engage the Fig. 6 is a sectional view, partly in' Fig. 7 is a Fig. 9 is a perspec'-;

bearings, at the ends of thetwo rearwardly= projecting branches of the arm 1 and is provided at one end with a belt-pulley 5, by means of which power may be communicated to the said shaft. At the opposite end of said shaft a hand-wheel 6 is provided for convenience in turning the shaft by hand. Adjacent t-he pulley 5 on the said shaft 4. I pro vide a sprocket-wheel161, which is connected by means of the chain 7 with the sprocketwheel 8 on the short shaft 9, which latter is journal'ed in the lower upright portion of the frame. On the shaft 9, at the opposite side of the frame, a boss 10 is secured by means of a set-screw l1. Said boss 10 is provided with a crank-arm 12, to the outer end of which is pivoted one end of a link 13, which is in turn pivoted at the other end at 14 to the Ways formed by edges of the slide 15, so that the latter may be reciprocated Vertically on the face of the plate 20 as the shaft 9 revolves. The upper edge of the slide 15 is beveled transversely, as shown at 19, Fig. 8, thereby forming a pocket or recess between the said bevel and the face of the plate 20. The plate is secured to the frame B and forms a portion of the rear wall of the hopper 21. The upper portion of the slide 15 passes up through of its upward movement it passes the forwardly-inclined shoulder22 of the plate 20, and the staples which are carried up are discharged upon the said Shoulder 22, whence they slide downwardly and forwardly onto the raceway 23. The raceway 23 is thin enough to permit a staple to straddle it, and someof the staples in sliding down onto it from the shoulder 22 will straddle it and thence will be caused by the jar of the machine in operation to move downwardly along the said raceway. In this manner the raceway is filled with staples arranged side by side thereon, as are the staples shown at 24, Fig. 2. To prevent the staples from becoming displaced while on the raceway or while on that portion thereof which is outside the hopper, a fender or top rail 25 is provided, which is secured to supports 26, which are in turn secured to the raceway by screws 27 or in other suitable manner. The said top rail 25 is located a sufficient distance above the raceway 23 to afford a clearance for the heads of the staples which are on the raceway. The upper portion of the raceway 23 above the top rail 25 is preferably located within the hopper in order that staples which are improperly located thereon and are cleared or brushed off will fall back into the hopper. For the purpose of clearing the upper end of the raceway 23 by the removal therefrom of staples which are not properly located thereon I place above the said raceway, and preferably adjacent the upper end of the said top rail 25, a rotating brush 28, which may be provided, as shown, with two oppositely placed bunches of bristles 29. The brush 28 is set on a stud 30, projecting from the frame of the machine, and is secured to a ratchet-wheel 31, so that the brush may be revolved by revolving the ratchet. For the latter purpose I provide an operating-pawl 32 and a detaining-pawl 33. The pawl 32 is pivoted to the rocking lever 34, by means of which the driver is actuated, and the pawl 33 is pivoted to the frame. The said pawls 32 and 33 are normally held in contact with the teeth of the ratchet by springs in the wellknown manner. As the lever 34 rocks on its fulcrum the brush 23 will be rotated, causing the bristles to sweep over that portion of the raceway which lies in their path at regular intervals, dislodging any excess of staples therefrom, as also any staples which may be improperly located thereon. By this means the clogging of the staples on the raceway at the point where they pass under the top rail 25 is prevented.

At the lower end of the raceway 23 I provide an arm or support 37, which is secured to the forwardlyprojecting arm 3 of the frame. (See Fig. 1.) At the lower end of the support 37 is secured a stud 38, which projects horizontally under the raceway and is provided at its free end with the curved arm 36. The said arm 36 is normally pressed downwardly by means of a torsional spring 39, encircling the stud 38. The upper end of the arm 36 is so shaped as to project laterally across the raceway above the latter and is provided with a plate 40. The said plate 40 has at the lower end thereof a forwardlyprojecting beak 41, which extends parallel with and slightly above the lower end of the raceway, thus serving to prevent the staples which may be on that portion of the raceway from being thrown off or displaced. On the under side of the said beak 41, near the rear portion or heel thereof, I provide a clamping projection 42, which at certain times in the operation of the machine bears on the head of the staple which may be under it on the raceway and serves to detain that staple as also the staples above it on the raceway and prevent them from moving down the latter. It is at this point that successive staples are separated from the continuous mass on the raceway in order that they may be presented one at a time to the driver.

The instrumentalities which directly effect the separation are the clamping projection 42 and the cap 45 at the rear of the throat or guideway. The cap 45 has an inclined face 91, which when the throat is in its highest position is in proximity to the sides of the raceway at a point below the clamping projection 42. When the clamping projection 42 is raised, as hereinafter described, to release the staple under it, the staple released moves downwardly into contact with the inclined face 91, and the succeeding staples on the raceway move downwardly a corresponding distance, bringing the staple next above the one released, in position under the clamping projection 42, to be clamped and detained thereby. As will be clear, the space on the raceway between the clamping projection 42 and the inclined face 91 is only suflicient to accommodate one staple. The staple which has been freed from the clamping projection 42 moves down the raceway until it rests against the inclined face 91 of the cap 45. \rVhen the guideway or throat moves down wardly, taking with it the cap 45, the said staple is free to slide down to the extreme lower end of the raceway and would slide olf the same were it not that at this time the said lower end of the raceway is closed by the driver, which moves down past the raceway before the cap 45 moves down out of contact with the said staple.

The clam in .ro'ection 42 is raised to free P e P the staple with which it is in engagement by means of the cap 45 during the upward movement of the latter and just before it reaches the end of said upwardmovement. To this end I provide the laterally-projecting end or head of the arm 36 with a downward projection 90, which latter projection is on the opposite side of. the raceway from the said arm 36. The projection 90 carries an adjustingscrew 44, the lower end of which is in the path of the upwardly-moving cap 45. Before the cap 45 reaches its highest position it makes contact with the screw 44 and overcoming the resistance of the torsional spring 39 raises slightly the lever 36 and the plate 40 and clamping projection 42, freeing the staples on the raceway, as previously described, and permitting the staple which was detained by the clamping projection 42 to pass downwardly into contact with the inclined face 91, as indicated in Fig. 5. The cap 45 is slotted vertically (see Figs. 5 and 7) to receive the lower end of the raceway 23 when the cap is in its highest position. The rear end of the said slot where the latter passes through the inclined face 91 is only 3 sufficient in width to accommodatethe race way, as will be clear from Fig. 7,-where the.

' lower end of said raceway is shown as projecting into said slot. the slot (shown at 162, Fig. '7) are wider than the' said raceway to allow a sufficientclearance for the prongs of thestaple, which is at the extreme lower end of the raceway, when an eccentric 46 on the main shaft 4 through means of the adj usting-screw 49 in the well The rocking lever 34 is piv-' 3 of the frame.

definitely limited by the block 61, which is secured, by means of screws 62, to the rear: side of the said sleeve 58. The block-6l-is the cap moves upwardly into its highest position, the inclined inner end of the said wider portion being indicated by the dotted line 165, Fig. 5.

The driving lnechanism'is operated from a connection 47-, which is pivoted at 48 to the rear end of the rocking lever 34. The length of the connection 47 may be adjusted by known manner. oted at 50 between projections. 92 92 on the top of the frame. The forward end of the rocking lever-is slotted, as shown at 51, to receive the pin 52, which passes through the upper yoke-shaped end of the driverebar 53. The driver-bar 53 slides verticallyin a bush ing 54in the upper forwardly-projecting portion 55 of the arm 3 of the frame. The driver 56 is secured'in the lower end of the driver-bar 53, the shank or upper end of the said driver 56 being placed in the tapering socket orrecess 57 in the lower end of the said bar. (See Fig.

5.) The driver-bar 53 reciprocates verticallyin a sleeve 58, the lower end of which is cut away rearwardly, as shown, 3 to afford clearance for the lower end of the raceway and the separating mechanism.- At the extreme-lower end of the sleeve 58 is located the throat or guideway 35, through and out of which the staples are driven intothe stock. The sleeve 58.

also reciprocates vertically in an opening 59, formed through the projection .60 on the arm the sleeve permits the staple in the throat 35 to be carried down, with the throat, until the latter rests on the surface of the stock, after which the staple may be driven directly from; the throat or guideway-into the stock without danger of crippling. The said reciprocation also enables: the cap 45 to engage thescrew 44 and raise the clamping projection 42, while the cap 45 further serves to prevent the staples onthe raceway after they are re-. leased'from the clamping projection 42 from moving downwardly a greater distance than' will permit one staple to escape from underv the'said clamping projection.

The vertical movement of the sleeve 58 is free to reciprocate between the

projections

55 and 60, and these latter definitely limit its Near the upper end of the said sleeve'and projectvertical movement in either direction.

ing from opposite sides thereof are two pins 63 and 64.

slot 65in the plate 66, which latteris secured The other portions of The. vertical movement of.

The pin 63 moves vertically in a' to the side of the projection of the. arm 3 of the frame, as shown;inFig.; l. and slot serve to guide the sleeve and prevent it from turning on its long axis, ,The.

Thepin 63v sleeve 58 is carried downwardly by the driver at each descent of the latter and is moved in the opposite dir'ection'by meansof springs 67 and-68,- which are secured at their lower ends to the pins 63 and 64, respectively and at their upper ends to the pin 52 at the forward 7 end of the rocking lever 34.

The cap 45 at the rear of the gnideway or throat 35 is yieldingly secured in place by means of the screws 70 and-7l and the springs 74 and 75. The screws 70aud 71 pass through

holes

72 and 73,,respectively, in the front wall of the guidewayor throat (see Fig. 6)

and are screwed into the cap 45. Thesprings.

74 and 75 serve to hold the said cap 45 toits seat, while permitting it to recede or yield rearwardly under pressure. The tensionof the springs 74 and 75 may be varied by turn ing the screws '70 and 71, respectively, as.will be clear. When the cap 45, which forms the rear wall of the throat or guideway, is-on its seat, the-guideway, is of lesswidththanthe staple, so that the'latter will not drop through the guideway, but requires to be forced through by the driver. By thus contracting the throat when a staple leaves the end of the raceway it drops into the throat and is ;de-.

tained therein in substantially the position shown in-Fig. 5.; As will be clear, therefore, the cap.45 requires to yieldslightly asea h staple is forced through the throat, and-to this end it is yieldingly secured in place in the manner above described.. 1

Thedriver 56 is formed of proper shape ,to enter the guideway or throat 35 and engage the head of the staple, the lower endof the driver corresponding in shape-with the head of the staple to be driven.

Theclutch mechanism by means of which,

the machine may be stopped and started is in general of well-known construction. I have added, however, thereto some novelifeatures Said clutch mechanism will-be clear from'Figs. 3 and 4. Referring to Fig. 3,100

is a sleeve which is set on a stud 101, which latter projects horizontallyfrom the-frame of the machine. Said sleeve is provided with an arm 102,- with which a connecting-rodand treadle-lever, the latter beinglocatedin. convenient proximity to the foot of the opera-;. tor," is connected in the usual manner; :By depressing the treadle the arm 102 is raised,

rocking the sleeve 100'and raising theshipper-arm 103, which is also secured to the-saidsleeve 100. The rearwardbeveled and shoulv dered end of the arm 103, which isnormally heldin contact with the periphery of the hub or boss 104, fast on the main shaft; operates inthe revolution ot the said-boss-to cause the retraction of the bolt'105, (see 4,)--th:e.

wedge or beveled end of the said arm 103 lying in the'path of movement of a projection106 on the said belt 105. The said'bolt 105 may slide lengthwise of the main shaft in a slot in the said boss or hub 104. Then the said bolt 105 is retracted, as shown in Fig. 4, the pulley 5 is free to revolve loosely on the main shaft 4. If, however, the treadle of the shipper mechanism be depressed by the operator, thus raising the arm 103 out of contact with the periphery of the boss 104 and also out of contact with the projection 106, the bolt 105 is thrown into engagement with the hub of the pulley 5, said hub being notched in the usual manner, as shown at 107, so that when the end of the bolt 105 is projected into one of said notches the main shaft is caused to revolve with the pulley. The said bolt 105 is thrown forward by means of a spiral spring 108, Fig. 4, which encircles a stud 100, set in a recess 110 lengthwise of the said belt 105 and at the rear end thereof. One end of the said spiral spring bears against the face of the sprocket-wheel 161, and the other end thereof bears against the bottom of the recess 110 in the said bolt 105. It will be clear, therefore, that if the treadle of the clutch mechanism is depressed, raising the arm 103, the pulley 5 will be made fast with the main shaft, and if the pressure be removed from the treadle of the clutch mechanism the arm 103 will be brought into contact with the periphery of the hub 104 and when the shaft completes one revolution will operate to withdraw the bolt 105 and free the pulley 5 from the shaft." It is desirable to render the pulley 5 loose on the shaft 4 and to maintain it in this condition for a greater or less length of time. For the purpose of doing this I provide alocking-pin 111, (shown in Fig. 4,) which is placed in a radial hole in a projecting portion 112 of the boss or hub 104. A continuation of the said radial hole (shown at 113) is formed in the bolt 105, so that the inner end of the pin 111 may project into said hole 113, and thus serve to hold the bolt 105 in its retracted position. pressed inwardly toward the bolt 105 by in eans of a spiral spring 114, which encircles the said pin 111, said spring bearing at its lower end against a collar 115 on the pin 111 near the inner end thereof. The projection or housing 112 for the pin 111 is provided with

grooves

116 and 117 on different levels. These grooves receive a cross-pin 118, which projects through the said pin 111. The upper end of the pin 111 projects outwardly, as shown in Fig. 4, so that it may be seized by the thumb and finger. As shown in said figure, the pin 111 is in engagement with the hole 113in belt 105 and serves to lock the bolt in its retracted position. At this time the cross-pin 118 is in the slot or groove 117, the latter being deeper than the groove 116. It now the pin 111 be raised and rotated through a quarter of a circle, the pin 118 may be placed in the slot 110, and the lower or inner end of the pin 111 will be held out of contact with the bolt 105, thus permitting the said bolt 105 to be operated by means of its The pin 111 is normally.

spring 108, which will cause the bolt to be thrown into engagement with one of the notches on the face of the hub of the pulley 5. To permanently render the pulley 5 loose on the shaft, it is only necessary to retract the bolt 105, seize the pin 111, raise it slightly, turn it through a quarter of a circle, and allow its inner end to pass into the hole 113 in the said bolt 105.

In the operation of setting a staple the points of the prongs usually pass through the stock, and it is desirable to turn or clench the said points on the under side thereof. To this end the stock is placed on an anvil 70, which is provided on its surface with recesses into which the points of the staple-prongs project when they pass through the stock and which serve to turn the said points inwardly and clench them on the lower surface of the stock. To permit the said anvil to yield slightly under heavy pressure, which is desirable, I mount it at the forward end of a lever 77, which is pivoted at 78 in the arm 2. The said lever projects rearwardly and is curved downwardly, as shown in Fig. 2. The rear end of the said leveris slotted to receive the lower end of a rod 70, the upper end of which passes through a hole in the lug 80, which projects from the frame of the machine. a nut 81 and below the said lug another nut 2, which serves to hold the rod firmly in position. A strong spiral spring 83 encircles the rod and bears at its lower end against a washer 84, resting on the top of the lever 77 and at its upper end against a nut on the rod 79. A check-nut 86 serves to hold the nut 85 in a given position. By screwing down the nut 85 the spring 83 is compressed, and a greater pressure can then be applied to the anvil 76 without depressing it, as will be clear. The anvil-bar 701 is slotted vertically to receive the forward end of the said lever 77, and a screw 87 is placed through the said bar, below the said lever, to prevent the anvil-bar from rising out of contact with the said lever.

The form of staple commonly used in the machine above described is designated at 24 and is shown in Fig. 9.

The operation of the machine is as follows: The driver, sleeve 58, and cap 45 being in their highest positions, as shown in Fig. 5, the clamping projection 42 is raised out of contact with a staple on the raceway. The driver moves downwardly until it engages the head of the staple in the throat 35. The pressure of the driver as it engages the staple carries downward the sleeve 58 until the throat rests on the stock. As the cap 45 moves downwardly the clamping projection 42 engages the second succeeding staple on the raceway. The lowermost staple on the raceway moves down the latter until it reaches the extreme end of the raceway, where it is stopped by the rear flat face of the,driver, which at this time serves to close the end of the raceway.

On the rod 79, above the said lug, is"

. before this occursthat is, during the last portion ofthe ascent of the sleeve 58'the cap45 engages the screw 44, raising the clamp ing projection 42 and permitting the staples on theraceway to move downward until the lowermost staple is in engagement with the inclined face 91. Thedriver continues to ascend until its lower end is above the lower in operation, automatically adjusts itself to" stock of varying thicknesses, is durable, easy to keep in repair, and does not require a specially-skilled operator.

I What I claim is' 1. In a staple-setting machine, in combina-' tion, a raceway for staples, a drivcr, a th roatpiece constructed to retain a staple in its passage-way until forced therethrough by the driver and movable toward the work under pressure of the driver against said staple, and detents operatively connected with. the said throat-piece and caused thereby to act alternately in feeding the staples successively to the throat-piece.

2. In a staple-setting machine, in combination, a driver, a raceway for staples,'a detent to engage with a staple on said raceway adjacent the deliveryend of the latter, a throatpiece constructed to retain a staple in its passage-way and movable toward the work under pressure of the driver'ag'ainst said staple, a second detent, operated by the said throatpiece, and serving to, hold the staple afterits release from the detent first mentioned, means der pressure of the driver against a staple therein and provided with an elastically-held portion to retard the movement of the staple through its passage-way,and also provided with means to hold the staple last released from'the detent until the descent of the throat-piece and then free the same, the said throat-piece acting in the ascent thereof to operate the detent, and means -to raise the throat-piece as the driver ascends.

4. In a staple-setting machine, in combination, a' driver, aracewayfor staples, a holding-clamp to press against astaplc adjacent The sleeve 58 and throat and Just the driver, a throat-piece movable toward the work under pressure of the driver against a staple therein, means to raise the said throatpiece as the driver ascends, and means to 0p erate the clamp from the throat-piece, substantiall y as described.

' 5. In a staple-setting machine, in combination, a=driver, a raceway leading toward the.

driving-point in the machine, a clamp to en gage a staple at the delivery end of said raceway adjacent the driver, and a throat-piece movable in unison with the driver and provided with means to raise the clamp in the ascent of the driver to thereby release the staple'held by the clamp, and also with means to hold the released staple until the driver and throat-piece descend in unison in the driving of the preceding staple, substantially as described. I 6. In a staple setting machine, in combination, a driver, a raceway for staples, a detent to engage with a staple adjacentthe delivery end of the raceway, a throat-piece movable toward the work under the pressure of the driver against a staple therein and provided with a'detent to arrest the staple just released by the detent first mentioned until after the driving of the previous staple, means to raise the saidthroat-piece as the driver ascends','and means. to operate'the first detent from the throat-piece, substantially as de scribed.

"7. In a staple-setting machine, in combination, a driver, a raceway for staples, a clamp to engage with a staple adjacent the delivery end of the'raceway, athroat-piece movable toward the workunder pressure of the driver against a staple therein and provided with a detent to arrest the staple just released from the clamp until after the driving of the previous staple, means to raise the said-throatpiece as the driver ascends, and means to 0perate the clamp from the throat-piece,sub-

'stantially' as described;

8. In a staple-setting machine, in combination, a driver, a raceway for staples, the spring-actuated clamp to press against a staple adjacent the driver and providedwith a projection to prevent displacement of the staple from the raceway after being released, the throat-piece provided with an elasticallyheld portion to retard the movement of a staple through its passage-way, movable toward the work under pressure of the driver against such staple, and provided with a detent to hold the staple last released from the clamp until the descent of the throat-piece, the said throat-piece acting in the ascent thereof to raise the clamp, and means to raise thesaid throat-piece as the driver ascends, substantially as described.

9, In astaple-setting machine, the combination of a driver, a raceway for staples, a detent adjacent to the driver and provided with a projection extending into proximity to the driver to prevent displacement of the staple from the raceway after being released,and

too

connections between the driver and detent for operating them in unison.

10. In a staple-setting maehine,in combination a raceway shaped to be straddled by staples,a fixed receptacle or hopperhavin g therein a forwardly-inclined surface in continuation of the upper portion of the raceway, a lifter-plate moving at the side of said surface and having a transversely-beveled upper end to lift from the bottom of the fixed hopper a portion of the staples therein and discharge the uplifted staples laterally onto said surface, and means to operate the said lifterplate, substantially as described.

11. In a staple-setting machine, in combination, a raceway shaped to be straddled by staples,a fixed receptacle or hopper having therein a forwardly-inclined shoulder 22 in continnation of the upper portion of the raceway,

a lifter-plate sliding vertically in said hopper