US2489050A - Stapling machine - Google Patents

Description

Nov. 22, 1949 RUSKIN 2,489,050

STAPLING MACHINE Filed Aug. 4, 1945 4 Shets-Sheet l I N VEN TOR. flew/y Fae/ v17 m RUSKIN STAPLING MACHINE NOV. 22,

v 4 Sheets 2 Filed Aug. 4, 1945 INVENT0R BY zygfi/ Nov. 22, 1949 H. RUSKIN 2,489,050

STAPLING MACHINE Filed Aug. 4, 1945 4 Sheets-Sheet 3 IN V EN TOR.

BY ff? flak/7 H. RUSKIN STAPLING MACHINE Nov. 22, 1949 Filed Aug. 4, 1945 4 Sheets-Sheet 4 f z/Z INVENTOR Patented Nov. 22, 1949 2,489,050 STAPLING MACHINE Henry Ruskin, Chicago, Ill., assignor to Speed Products Company, Inc., Long Island City, N. Y., a corporation of New York Application August 4, 1945, Serial No. 608,899

11 Claims. (Cl. 1-3) This invention relates to a stapler machine. More particularly the invention relates to a stapler machine especially useful for passing staples through paper tags or other materials and for substantially clinching the staples so as to provide a connection between a plurality of sheets of paper tags or other materials.

Among the salient objects of the invention is to provide a stapler machine of the character hereinafterdescribed, which will be highly efficient in I use and economical in manufacture; one in which there are separate fulcrums for the driver and the striker therefor; one in which there is provided a hollow head which permits the paper to be self-forming with respect to the head so that the full benefit of the drive of the staple against the paper will result during the stapling operation; a stapler device in which there is an open staple magazine, thus providing easy loading of the staples with the staples each being guided in to driving position by contact with the legs thereof; a stapler machine which will minimize the possibility of jamming of the staples either in the magazine or in the driver head; a stapler machine in which the driver at all times has a substantial portion confined in the driver slot, thus preventing the driver from becoming distorted or otherwise bent during the stapling operation.

Among the several other objects of the invention is a stapler machine in which the mechanism is substantially concealed, one in which there is employed an anvil which has a predetermined degree of yieldability and in which there is provided a bridge structure serving as a support for the magazine cover and an anchor for the spring driver.

A still further and equally important object of the invention is the provision of a stapler machine in which there is provided a stapler magazine capable of holding a substantial number of staples in position for movement to the point of engagement with the driver, and in which the staples are guided to such point by engagement of the legs of the staples only with the guiding .sides of the magazine cover.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of parts to be hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings showing the preferred form of construction, and in which:

Fig. 1 is a perspective view of a stapler machine embodying the invention;

Fig. 2 is a longitudinal vertical sectional detail view of the same;

Fig. 3 is a perspective view of the base assembly of the stapler machine embodying the invention;

Fig. 4 is a perspective view of the staple follower;

Fig. 5 is a sectional detail view taken substantially on line 5-5 of Fig. 2;

Fig. 6 is a top plan view of the anvil embodied in the invention;

Fig. 7 is a sectional detail view taken substantially on line l--'! of Fig. 2;

-Fig. 8 is a fragmentary sectional detail View illustrating the mounting of the cover and driver spring with respect to the base of the stapler machine;

Fig. 9 is a perspective view of the magazine cover;

' Fig. 10 is a perspective view of the driver;

Fig. 11 is a perspective view of the staple magazine;

Fig. 12 is a sectional detail view taken substantially on line l'2-l2 of Fig. 2;

Fig. 13 is a sectional detail view taken substantially on line 13-! 3 of Fig. 2.

The drawings illustrate the preferred form of construction by which the several objects of my invention are accomplished. In this drawing, l0 indicates the base of the stapler machine S, H .the magazine assembly, and I2 the cover and/or striker.

I shall first explain the base assembly It. This base assembly comprises a base plate l3, a perspective of which is illustrated in Fig. 3. At one end of the base plate l3 there is struck from the top walls l4 oppositely disposed lugs providing fiat ears I5 having formed in opposite vertical edge portions I6, notches or cut-out portions H. In the opposite end portions l8 of the base l3, there is an indented portion 26 which provides a support for the adjustable, yieldable anvil in a manner now to be explained. This portion 20 is stepped below the top surface 2! of the base plate 13 in the stamping operation thereof, and this indented portion provides a medial strip 22 from which extend in opposite directions with respect to each other, lugs or fingers 23. These lugs or fingers 23, after the stepping operation of the portion 20, are normally disposed in the position shown in dotted lines as at 24, prior to the assembly of the anvil 25, a plan view of which, as Shown in Fig. 6, includes an anvil plate 26 from which extend, in opposite directions, extensions 21 and 28. The extension 21 has its edge portion rolled as at 29 to provide a suitable finger grip for the purposes presently to be explained. The extension 28 provides a bead 36 which serves as a latch when the anvil is moved to the right as viewed in Fig. 2. The anvil plate 26 is provided with corresponding indents or indentations 31 into engagement with which the legs 32 of one of the staples 33 are adapted to be driven. These indentures' 31 are tapered toward each other in the direction of their length so that the legs of the staple engaging at the points 34 of these in-'- dentures will be bent toward each other, thereby clinching the staple to the material through which it has been driven. On this anvil plate 26 there is also provided in addition to "the indentures or indents 31, a second pair of indentures or indents 35 tapered in opposite directionsoutwardly from each other whereby'thelegs of the staple will be bent away from each other so as to effect pinning the staple to the material through which it has been driven, as distinguished from clinching the staple thereto. i g y In assembling this anvil with 'respect to the base plate l3, it moupted upon the portion 22 with the extensions or fingers 24 in the position shown in dotted lines. The 'fing'ers 24 in the dotted line positioin, as shown inFig. 2, permit the anvil to be projected in the position shown in Fig. 2, after which these fingers'are pressed to the position shownin full lines, where they will form a suitable support and guide for the anvil.

Suitable markings may appear on the anvil plate -to indicate the iride'ntures to be used.

To this baseplalte is seemed the magazine 'assembly l'l, which will now be explained. This magaz ine assernbly H includes a, magazine 36, a

perspectivevie-w of which is shown in 11. This ma azine as includes a bottom wall 31 and opposite side walls 38 merging together at the iront end as at 39. Thefside walls 38 are enlarged at the rear end of theinagazine as 'at 40, and between these enlarged portions of the -side walls there is struck fioinfthe bottornwall 31 a bridge 4i. On oppositesids of this bridge 4! and formed in the bottom"wall 31, are elongated slots 42 through which pass the lugs '15 in 'a manner such that the oppositefcorresponding notches l'l will latchingly receive the edge portions 43 of that portion of die bottoi'n 'wall 31 def ning the corresponding end porno-infer the slots '4 Z,

A mounting bracket is indicated at '44; and this mounting bracket is positioned at the forward end portion of the ma azine and secured to the bottom andside walls'thereof in any approved mannensujch as'welding or the like. This mounting bracket 44 has a horizontal portion 45 provided with an upstanding stud"" 4'5ior reasons hereinafter explained. se pe "of the assembly of this mounting bracket 44 ise. staple track 41 comprising oppositely disposed, parallelly extending spaced walls 48 over whi'ch the staples are moved from the staple sseregeer-tne magazine in a manner hereinafter set forth. These walls 48 are beveled as at '48 to facilitate :the'rnbvnfe'nt of the staples *ther'eove'r i-ri't'othe positionshown in Fig. 2.

In Fig. 2, this staple tiabkTl is spaced from the mounting bracket 44 a distance equivalent to the diameter of a staple. The vertical walls 44" or this mounting bracket serve and'cooperate with the staple track to properly guide'a staple for 'penetration through the material to be stapled.

This magazine at itsopposite end portion provides an upstanding plate IS t'Q serve asen abutinent for a spring to be brhhtlf described.

openings 55, preferably substantially square in plan view, for the reception of the trunnions 56 formed as an integral part of the bridge 4| The arcuatedportion 54 terminates into parallel spaced resilient fingers 5? rolled at their end portions as at '58 for engagement in the corresponding notches 41 (Fig. 2) of the lugs l5, whereby to effectuate a connection between the staple driver 50 and the magazine 35.

The driver head 5| (Figs. 2 and 10) comprises avertically extending wall 58, an extension 60 of which is turned back upon itself to provide a bearing 6! 'for reasons hereinafter set forth. The fiie'dial portion or "this 'St'iiker'head is stepped forvvardly as "at"52 to "provide a staple 'driver'blade 63 which, as shown in Fig. 2, has its lower end portion '64 normally disposed through the driver slots 65 0f the magazine 'cov'er' fi't, a perspective 'ofwhich 'cover is shown in Fi '9. Adjacent this slot '65 is a "perforation 54' through which pro- 'j'ects "the stud 56 for permanently connecting the cover 66 to the magazine 36. The significance of this arrangement will befound in the fact that the staple driver blade is stabilized for itsstrikling movement upon "the staple between the guidwan--44 of the mounting bracket and the "wee n. The nagazinecover 65 comprises an end portion 6-1 which corresponds-in shape to the enlarged portionsflb of the side walls 38 of the magazine 36. The top' 'portion 58 of this end portion 67, provided with opposite indentations 69, and the bottom walls of these indentations are perforated as'at 1B for the projection of the lugs 56, whichl i'gsiifi, after projection through these perforation's,areswaged-toirirovide attaching caps i l. Thus, through these swaged end portions "H of the lugs 56, the spring and the magazine cover are seemed to the magazine 36. It will be seen that in this simple arrangement the resilient air-tensions -57 of the staple driver '50 serve as a 'ie'sili'ent latch connection between the magazine '35'a nd the base plate 1-3 "in cooperation with the notches 11' in their latched engagement with the end portions 43 of the notches 42. 7 It will be particularly iiot'ed' tha't this provides a very efiective and" simple method of connecting these several partstogether which materially reduces the cost or manufacture.

The magazin cover has a central portion 12 provided by striking therefrom the opposite longitudirial giiidingnanges 13, 'as seen in Figs. '7 and 9. These flanges 7 3, when struck from the top wall ofthe magazine cover Til, provide the channel 14 for the staples 33 and c'o'n'stitiite the sole guide for guiding the staples from the channel to the staple guide 47, thus greatly facilitating not only the mounting of the maximum number of staples in'the channel 14.1mm also greatly reducing the "cb'st'"ofinantifaotune of the magazine cover.

Forwardly of the channel 14, the top wall of the rnal'g a'zine coverjs stepped down as at [5 to provide a dingfplate which extends over the staple tracl'r' was 'bestfshown in Fig. 2, and this guiding plate 15 "isprgvided with an upstanding 5 flange is which is positioned in the slot 11pmvided by stamping the staple driver blade 63 from the driver head as best shown in Fig. 2.

The parallel bar portions 53 of the staple driver 58 are disposed in the channels 18 provided by the side walls 19 of the magazine cover 86 and the flanges 13. The driver head projects upwardly through the driver slot 65, with the staple driver blade 68 manipulatable through an adjacent slot 65'. The enlarged portions 61 of the side walls 19 provide bearings 88 for pivotally mounting a striker member 89, hereinafter set forth.

Operable in the channel 14 is a staple follower 8|, a perspective of which is shown in Fig. 4. This follower is substantially channel-shaped in cross section and is designed to be mounted in the channel 14 to the rear of the staple strip 33 for yieldably urging the staples forward into staple driving position. To facilitate manual retraction of this follower when assembling a strip of staples in the channel 14, a suitable fingerpiece 82 is provided. This finger-piece 82 has a portion 83 which projects through a slot 84 formed in the top wall 85 of the follower and serves as an abutment for one end portion 86 of a spring 8! confined within the follower 8|, as

best shown in Fig. 2, the opposite end portion 88 of this spring engaging the abutment lug 49 (Fig. 2).

To complete the invention I provide a striker receive the bearings 80 (Figs. 8, 9 and 12). This striker comprises a top wall 89, opposite side walls 93, and a front wall 94, and operates within the magazine 36. The top wall 89, at one end thereof, is provided with an outwardly indented portion 95 which receives the bearing 6| A device constructed in accordance with the foregoing description will result in a stapler machine the parts of which are related to each other in a manner such as affords expeditious and easy assembly and one which will be economical in manufacture.

In use, after the striker has been pivoted upwardly about the bearings 88 to expose the storage channel 14, the staple follower M is retracted against the action of the spring 81 and a strip of staples 33 is mounted in the channel 14. In this mounting of the strip of staples 33, it will be seen that it does not require particular attention during this mounting operation, as it is a very simple matter to merely mount the strip in the open channel 14. The construction of this channel 14 and the arrangement of the follower therein alfords the mounting of a strip of staples of substantial length, of a length greater than may usually be employed in the stapler machines with which I am familiar. Upon this mounting of the strip of staples in the channel 14, the follower is released and by action of the spring will engage the end of the strip of staples to urge the staples into driving position. The striker 89-is now pivoted to the position shown in Fig. 2. The foremost staple will be disposed directly beneath the staple driver blade 63 in the space between the guiding wall 44' and the staple track 41, In such position, the staple driver blade at all times has its lower end portion stabilized in driving direction and is ready for operation upon the staple, which is brought about by striking the striker 89 to pivot the striker downwardly and at the same time move the staple blade through its driving path to drive the staple through the material and into engagement with the anvil for either of the two operations; namely, the pinning or the clinching. Upon removal of striking pressure on the striker 89, the striker will return to its normal position, as shown in Fig. 2, by the action of the return of the staple driver 50. Thus, it will be significant to note that the driver serves the two-fold purpose of driving the staple through the material and crimping or pinning the same and also that of returning the cover to its normal position. The spring fingers 51 of the driver also serve to releasably latch the various parts to the base plate l3.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to protect by Letters Patent is:

1. A stapler device comprising a base, a stapler magazine carried by the base and between which material to be stapled is adapted to be positioned, a driver throat provided by the magazine and adapted to receive staples therefrom, a cover for said magazine, a staple driver having a longitudinal portion thereof arranged between the cover and the magazine, one end of said longitudinal portion providing connection between the base and the staple driver, said longitudinal portions of said staple driver being formed of spring material whereby to bias said driver member from driving position with respect to said staples received in the throat from the magazine, said staple driver having a driver head exterior of said magazine and provided with a staple driver blade movable through the throat, in combination with an anvil carried by the base and. adapted to cooperate with the staple driver blade to clinch the leg portions of a staple with respect to said material.

2. A stapler device comprising a base member including an anvil, a magazine including a staple channel, a track at one end of the channel and adapted to receive staples therefrom for movement to a position over said anvil, a follower carried by the magazine for moving said staples to said position, a resilient staple driver having a staple driver blade disposed to engage a staple moved along said track and over said anvil, a

cover for the magazine, a striker for said staple driver, and means for pivotally connecting said striker to said magazine cover.

13. A stapler device comprising a base member including an anvil, a magazine including a staple channel, a track at one end of the channel and adapted to receive staples therefrom for movement to a position over said anvil, a follower carried by the magazine for moving said staples to said position,'a resilient staple driver having a staple driver blade disposed to engage a staple moved alon said track and over said anvil, a cover for the magazine, a striker for said staple driver, and means for pivotally connecting said striker to said magazine cover, said driver being formed of spring material whereby to bias said striker to non-driving position with respect to said staples.

4. A stapler device comprising a base member

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