US2545397A - Stapling device - Google Patents

Description

March 13, 1951 M. E. WAMPLER STAPLING DEVICE n 5 Sheets-Sheet l Filed Deo. 26, 1945 lllllll ilk K- lll arch 13, 1951 M. E. WAMPLER 2,545,397

u STAPLING DEVICE Filed Dec. 26, y 1945 f 5 Sheets-Sheet 2 IN VEN TOR.

www@ E www www M. E. WAMPLER March 13., 195i STAPLING DEVICE 3 Sheets-Sheet 5 Filed Dec. 26, 1945 y [N VEN TOR. mamy@ i www Patented Mar. 13, V11951 UNITED STATES TENT OFFICE l STAPLING DEVICE Melville E. Wampler, Chicago, Ill.

Application December 26, 1945, Serial No. 637,204

9 Claims.

The present invention relates to a stapling de:- vice, or the like, and more particularly to a staple machine adapted for o'ice use.

One object of the invention is to provide a stapling device having a magazine which is pivotally secured so that it may be easily swung away from the staple driving mechanism to clear bad staples.

Another object is to provide mechanism for removably locking the magazine in operative position relative to the staple driving mechanism.

A further object is to provide mechanism for removably securing the base to the stapling head. Still another object is to; provide novel spring means for urging the staples forwardly in the magazine. into position for operation .of the staple driving blade.

Yet another object is to provide a novel staple driving mechanism for reciprocably operating a staple driving blade in combination with spring means for returning the driving blade to initial position.

A still further object is to pro-vide an anvil arF rangement on the base of the staple which has a plurality of grooves adapted for diierent types of staples. Y

Other and further objects and .advantages .or the present inventionk will be apparent fron-r the following description thereof, and. from the claims appended thereto.

In the drawing. wherein like numerals refer to like or .corresponding parts throughout the several Views,

Figure l. depicts a side elevation, partly in section, and with parts broken away,- of the stapling device embodying` the features of this invention,

Figure 2 is a longitudinal .vertical section of the stapling device, shown in Figure l, depicting the staple driving mechanism operating upon. a piece of paper,

46 Figure 3 is a sectional View taken alongthe line 3-.3 .of Figure 1, in the'direction of the arrowsY Figure 4 is va sectional View taken. along the' line 4 4 of Figure 1; in. the direction of the` arrows,

Figure 5 is a sectional View taken along` the line 5.-5 of Figure 1, in the direction 4of the arrows,

Figure 6 is a sectional View taken along the line 6-6 of Figure 1, in the 4direction of the are' 50 rows,

Figure 7 is a sectional view taken along the line 1-1 of Figure 1, in the direction of the ar'- rows, l

Figure 8` is a longitudinal vertical section of' the top piece of the stapling arm,

.. grooved -at 26 to'receive staples, .or the like;

Figure 9 is a longitudinal vertical section of the central casing of the stapling device, showing the staple magazine in partially .disengaged position,

Figure 10 is a sectional view of the staplepusher means, and

Figure 1l is a longitudinal vertical section of the base of the stapling device.

Referring. to the drawing, and more particularly to. Figures l and 2, the numeral 2t generally represents the base plate of the stapling Inachine, which is rectangular in cross-section, and preferably made of sheet steel, or the like. Ou the base 2li are mounted two ears 2|, in spaced apart relation, having a pin v22 anchored therein'.

3. A` spring band. 23' is disposed between the metal ears 2l and'is secured to the base. in any sui-table manner such as` by nut and bolt 2 4,

A hexagonal anvil element 25 is disposed on the forward portion of the base and is suitably A spring member 2l is mounted on the underside of the base 20 and engages the hexagonal anvil member to prevent its turning out of position. It desired, each of thehexagonal faces of the anvil. member 25A `can. be grooved in a different way, so as toadaptvv the said anvil for dierent types of staples, Depending upon the particular type of staple employed, thel hexagonal anvil element can be rotated to bring the proper grooved surface into operati-ve position.

As better shown in Figure 9, the stapling head comprises a. central hollow casing 2.8'. 0f rectangular cross-section, provided with an internal.- lv disposed bracing member 29 which extends subfvstantially the length of the casing 28 .and is provided with .aperturesin the side wall thereof', headedpin 301s disposed .in said apertures or slots, and is longitudinally slideable therein. EThebrace 29, `in, the forward portion thereof, is also: out

Y away to provide a C-shaped section 3i adaptedto receive a part of the 4sta-ple driving mechanism` as herein-after more fully explained. The front wall 32 of the brace 29 is spaced away vfrom the front wall of ther casingy 28 to permit a staple 5 driving blade to reciprocal-,ev therebetween.

The lower rear portion .of the4 casing 2&8 is angularly slotted at `33 for engagement with the pin 22A of the'A base plate 2:0.. The spring 23 is de' pressed,l and the pirr212 is slid into the angular'slotl 33 so thaty the centralcasing isy adapted forpivetal movement at the pin 2.2 against the spring 'ban-d 23' which normally urges thecasing 28 away from the base plate 20'. The side walls of the casing 28 are cutaway at 33a, and' also provided witha, longitudinal slot 33o communicating with the cutaway portion'33a.

A magazine generally represented by the numeral 34, is pivoted to the casing 28 by the pin 35 extending through a bracket 36 carried on the underside of the magazine 34. The magazine 34 comprises an elongated staple trackway 31 of U-shaped configuration, upon which is adapted to ride U -shaped staples 38.

Two spaced apart upstanding ears 39 are mounted on opposite sides of the forward portion of the staple trackway 31. Each ear 39 is provided with a slotted portion 40. The ears 39 are adapted to engage in the cutaway portions 33a, by sliding the pin 30 forwardly in the slot 33h;

The magazine 34 is locked in position by the pin'V 30 which engages in slot 48 urged by a spring as more fully described hereinafter. Itis one ofV the primary features of this inventionto have 4 mechanism is operated, as shown more completely in Figure 2. The cam 6i limits the movement of the staple driving mechanism, to guard against its locking in a position which would make it difficult for it to return to initial position. The link 59 is connected at its other or lower end by a pin 62 to a reciprocable staple driver comprising a head 63 carrying a depending staple engaging plunger or blade 64. The head 63 is reciprocable inthe guides formed by the notches 3l in the bracing members 29 as noted heretofore, While `the blade 64 is guided between the ends 32 of the member 29 and the front wall of the casing 28.

YA spring wire 65 engages the pin 62 and is the magazine 34 pivoted to thecasing 28, in such a manner that the said magazine can bel'selectively removed from engagement in the casing 28 to. alleviate anyfstaple jam; orV thelikef; I

At the rear end of the trackway 31'is-disposed a pin 4I which is adapted to cooperate with the staple-pusher means.

Figure more fully shows the staple-pusher means generally indicated by the numeral 42, and comprising a nob.43 secured to an elongated member 44, of rectangular cross-section. The member 44 is provided with an elongated slotportion 45 in the bottom wallthereof. A rider 46 is adapted to slide along the slot 45, and is secured .thereto by a headed pin 41 which extends through the slot 45 and engages a rsleeve 48 of inverted U configuration. The sleeve 48 is adapted to ride along the staple trackway 31 and push the staples 38 forwardly into position for the operation of theV staple driving mechanism.v .The rider 46 and the sleeve 48 move as a unit along the slot 45. A spring 49is secured to the rider member` 46 and passes over aroller member 50 which is secured to the front portion of the member 44 by pin 5I.

The other end of thek spring 49 lis secured to the nob 43 at the projection 52.- If the sleeve 48 is slid toward the nob 43 tension is built up inthe spring 49-to urge 'said sleeve 48.1`orwardly against the staplesV 38 to successively deliver the staplesV to the operation of the' stapling driving mechanism. g v

y Mounted on the upper. portionofthe casing 28 is an actuator for the staple driving mechanism herein shown as a channelshaped element or hand lever 53 pivotally secured to the casing-by apin 54 for limited relative movement with ref-- erence to said casing 28. In the forward portion of the element 53 is mounted a roller 55 which is secured to the side Walls of the element 53 by thev pin 56. -The element 53, like the casing 28 is rectangular in cross-sectional area and is adapted to engage `over-the casing 28 to carryv the roller 55 into operative position relative to'th'e staple driving mechanism which willnow be more fully explained in detail.

Referring to Figure 1,in the forward portion of the casing 28 is disposed a double link 51which constitutes one element of a toggle joint and which. is pivoted to the side walls of the casing 28 by a pivot pin58. The double link 51 com'- prises two spaced links, each of which abuts .a side inner wall of the casing 28. A third link 59 constituting the other element of the toggle joint is pivotally securedbetween the double links 51 bythe pin 60. The link 59 has a cam portion 6Iv which moves toward the inner side of the front wall of the casing 28`when thestaple driving wound around a pin 66 carried by the casing 28 and then extending downwardly across the notch 33D. There-are two spring wires 65 each of which urges the blade 64 and associated elements of 4-the staple driver upwardly from the anvil 25 and normally maintains them in a retracted position. In this position the toggle' links 51 and 59 are swung into the position shown in Fig. 1 of the drawings. f

`The spring wires 65 additionally cooperate in locking the magazine 34 in position within the `casing 28. The pin 30 is moved against the tension of the spring wires 65 and the magazine 34 is positioned so that the notched portion of the ears 39 coincides with the slot 33h. In this position,V the pin 36 isurged by the spring wires 65 into the notch 46, to removably lock the magazine 34 within the casing 28.

In the operation of the staple driving mechansm, pressure 'is `applied to the front endof hand lever 53 rocking it downwardly, which causes the vroller 55 to engage the double link Y51 and swing it forwardly about its pivot point 58. The movement of the double link 51 is transmitted through the link 59 to the head 63, which moves downwardly, sliding in cutaway portion 3| of the member 29. The downward movement of the head 63 carries the blade 64 downwardly to engage the foremost one of the staples 38 on the trackway 31 which has been pushed into operative position by the staple-pusher sleeve 48.

The downward movement of the blade 64 carries with it a staple which pierces a, paper P which vis positioned on the anvil member 25 to insure an ellicient stapling. The staple is bent into paper locking position in groove 26. After the staple engages through'the paper P, pressure is released from the hand lever 53 and the spring wires 65 automatically return the staple driving mechanism to its initial position, and the staplepusher means automatically again urges the staples forwardly in the magazine 34 for another operation by the staple driving mechanism.

The staple-pusher 42 is provided at the rear krend thereof, and on the under side thereof suboperative relation with respect to the magazine 34. The engagement of the hook 61 over-the pin 4i keeps the staple-pusher in such a position that the spring 49 continuously urges the sleeve 48 forwardly in the magazine 34 to push staples: 38 forwardly into operative position relative to the staple drivingV mechanism.

To remove the staple-pusher 42 from the staple magazine 34 it is only necessary to push the knob 43 slightly forward against the force exertedA thereon by the spring 49 acting through the rider 46 and sleeve 48`against the staples 38 on the asie-,ece

trackway. The pusher is thus rocked upwardly untilr the hook 6l is free of pin 4l whereupon it may be withdrawn from the staple magazine 3d.

When it is desired to ll the staple magazine 34 with staples, or the likethe staple magazine 34 is disengaged from the casing 28 by pushing the pin SQ forwardly into the slot 33o against the tension of the spring wires '65. The m'agan zine 3d can then be pulled away from the casing 28, as it is pivoted at 35,.

The staples 3.8 may then be disposed on the staple trackway 3T and n the magazine 34 put into position within the casing 2,3 by again moving the pin 36 forwardly in the slot 33h and bringing slot d coincident therewith, and allowing the spring wires 55 to push f the: Pin 3B into the Slot Mito lock the magazine 3.4, in, position.4

The staple-pusher t2 is then put into operative position by sliding the sleeve i8 along the trackway 37 until it abuts staples 38. More or less staples 38 may be employed, as the sleeve Q3 4has a considerable range of movement against the tension of spring 49.

The staple-pusher 42 is then locked into positionby engaging the hook 6l over the pin di,

with the tension of the spring 49 keeping the sleeve 48 continuously urging staples 38 forwardly in the magazine 3d.

While the invention as herein illustrated and described is embodied in a device for feeding and driving substantially U-shaped staples, it is to be understood that it may be modified in construction to feed and drive fasteners of other types. Therefore, the term staple as employed in the description of the invention, is intended to inl for driving staples disposed within said casing...

comprising, two spaced apart links pivotally secured at one end thereof to the side walls of said casing, a third link pivotally secured at one end thereof between said two spaced apart links, and having a cam portion which limits the pivotal movement of said links by engaging the inner side of the front wall of said casing, a pin secured to said third link at the other end thereof, said pin being secured to a reciprocable head, and a staple engaging blade movable with said head.

2. In a stapling device, a hollow casing, means for driving staples disposed within said casing comprising, two spaced apart links pivotally secured at one end thereof to the side walls of said casing, a third link pivotally secured at one end thereof between said two spaced apart links and having al cam portion which limits the pivotal movement of said links by engaging the inner side of the front Wall of said casing, a pin secured to said third link at the other end thereof, said pin being secured to a reciprocable head, a staple engaging blade movable with said head, and spring means normally urging the said cam portion of said third link away from said front wall of said casing.

3. In a stapling device, a hollow casing, a top portion for Said casing and pivotally secured at the rear end thereof and adapted for limited independent movement relative thereto, a roller journaled in the side walls of said hollow casing for cooperation with staple driving means, said means for driving -staples disposed within said casing comprising, two spaced apart links pivotally secured at one end thereof to the Side Walls of said casing, a third link pivotally secured at one end thereof` between said two spaced apart links, and having a projection which limits the pivotal movement of said links by engaging the inner side of the front wall of said casing, a pin secured to said third link at the other end thereof, said pin being secured to a reciprocable head, and a' staple engaging blade movable with said head.

4. In a stapling device, a hollow casing, a top portion for said casing and pivotally secured at the rear end thereof and adapted for limited independent movement relative thereto, a roller journaled in the side walls of said hollow casing for cooperation with staple driving means, said means for driving staples disposed within said casing comprising, two spaced apart links pivotally secured at one end thereof to the side walls of said casing, a third link pivotally secured at one end thereof between said two spaced apart links, and having a projection which limits the pivotal movement of said links by'engaging the inner side of the front wall of said casing, a pin secured to said third link at the other end thereof, said pin being Secured to a reciprocable head, and a staple engaging blade movable with said head, and spring means normally urging the said projection of said third link away from said front wall of said casing. k

5. In a stapling device, in combination, a hollow casing, a staple driver supported and guided for reciprocation in said casing, a magazine in said casing for supplying staples to said driver, said magazine being pivotally supported for swinging movement out of the casing and away from said driver to provide access thereto for clearing away jammed staples, latch means for releasably holding said magazine immovable with respect to said casing, and spring means common to said driver and said latch means for yieldably urging the driver toward a retracted position and the latch toward latching position.

6. In a staple driving device, in combination, a hollow casing, a staple driver supported and guidedfor reciprocation in said casing, actuating means for said driver including a hand lever pivotally Supported on the "upper portion of said casing, a pair of pivotally interconnected links Y disposed in said casing between said hand lever and said driver, one of said links being pivotally secured to the casing and the other of said links being pivotally secured directly to said driver, spring means yieldably urging said driver to a retracted position, and means operable by said hand lever for actuating said links to impart a staple driving movement to said driver.

7. In a staple driving device, in combination, a casing, a staple driver supported in sad casing for reciprocation, means for feeding a succession of staples into operative relation to said driver, spring means normally holding the driver in `a retracted position, a toggle joint connected directly between said driver and said casing, an actuating member mounted on said casing t0 swing about an axis spaced substant'ally from said toggle joint, and means carried by said member engageable with said toggle joint incident to the downward swinging of the member for imparting staple driving movement to said driver.

8. In a staple driving device, in combination, a casing, a staple driver supported in said head for reciprocation, means for feeding a succession of staples into operative relation to said driver, spring means normally holding the driver in a retracted position, a toggle joint connected directly to said casing and said driver, a hand lever pivotally supported on said casing, Aand cam means operable upon depression of said hand lever for actuating said toggle joint to impart a staple driving movement to said driver.

9. In a staple driving device, in combination, a reciprocable staple driver mounted at one end of the device, means for feeding a, succession of staples into operative relation to said driver, means normally holding said driver in retracted position, actuating means for advancing said driver comprising a toggle joint interposed directly between the driver and the stationary part REFERENCES CITED The following references are of record in the le of this patent:

5 UNITED STATES PATENTS Number Name Date 1,441,474 Anderson Jan. 9, 1923 1,687,871 Maynard Oct. 16, 1928 1,983,397 Polzer Dec. 4, 1934 10 2,073,819 Vogel Mar. 16, 1937 2,202,259 MacDonald May 28, 1940 2,232,016 Walker Feb. 18, 1941 2,240,911 Polzer May 6, 1941 2,251,833 Polzer Aug. 5, 1941 15 2,281,198 Maynard Apr. 28, 1942 2,342,818 Polzer Feb. 29,1944 2,347,568 Kunert Apr. 25, 1944 2,427,028 Spencer Sept. 9, 1947 20 FOREIGN PATENTS Number Country DateV 616,569 France Oct. 30, 1926

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