US1238327A - Stapling-machine. - Google Patents

Description

R. PARSONS.

STAPLING MACHINE.

APPLICATION FILED.SEPT.1, ms.

1,238,327. I Patented Aug. 28, 1917.

3 SHEETSSHEET I.

R/chMo/va pARSOIVS.

R. PARSONS.

STAPLING MACHINE.

APPLICATION FILED SEPT. 1, 1916.

Patented Aug. 28, 1917.

3 SHEETS-SHEET 2.

ZIYLUMITOT R. PARSONS.

STAPLING MACHINE.

APPLICATION FILED SEPT. I, 1916.

1,238,327. Patented Aug. 28, 1917.

3 SHEETS-SHEET 3.

R/bhmo/m Rraoms.

TED STA RIGHMOITI? PARSONS, F PHILADELPHIA, PENNSYLVANIA.

STAPLING-MACHINE.

Specification of Letters Patent.

Application filed September 1, 1916. Serial No. 118,119.

To all whom it may concern:

Be it known that I, RICHMOND Parsons, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful ,Improvements in stapling-Machines, of which the following is a specification.

My invention consists of improvements in stapling mechanism, and is particularly serviceable for securing together the hoops and slats of baskets. However, it will be understood that it may be used advantageously for other purposes.

One object of my invention is to provide mechanism which will form and insert staples which efiectively bind together the members into which they are inserted.

Another objectis to so make the ends of said staples that they will not project beyond the materiaL into which the staples are inserted, thus preventing injury to the hands of any one who handles articles having staples made and inserted by my improved mechanism. 7

Another .object is to make my improved mechanism positive in its action and of comparatively simple construction.

A still further object is to provide mechanism which will prevent waste and insure a far greater proportion of perfect work than other stapling machines now on the market.

These objects, and other advantageous ends which will be described hereinafter, T attain in the following manner, reference being had to the accompanying drawings in which Figure 1 is a front elevation of my invention.

Fig. 2 is an enlarged front elevation on I an enlarged scale showing the staple forming mechanism.

Fig. 3 is a fragmentary elevation, of similar nature to the bottom portion of Fig. 2, showing certain of the elements in difierent positions and including the staple and staple wire in certain positions which they assume during the operation of my invention. 7

Fig. 4 is a sectional elevation on the line aa of Fig. 2.

. Fig. 5 is. a section on the line bb of Fig. 2 showing certain of the elements in outside view.

. Fig; 6 is a fragmentary elevation partly in section showing a certain feature of my invention.

Fig. 7 is a sectional view of a bracket which I employ, said section being taken on the line 0-0 of Fig. 1, the supported. parts being omitted.

Patented Aug. as, tart.

Referring to the drawings, lis asupporting rail which may be attached to a frame or other supporting structure (not shown). This rail is provided with a groove 2 for receiving a tongue or rib 3 on a bracket 4:, the latter being secured by a bolt 5 'to said rail 1, said tongue and groove acting to prevent lateral movement between the bracket 4 and rail 1.

The bracket 4; is recessed at 6 to form-a slide-way for a vertical reciprocatingplate is designed to slide within the recess 6 di: 7

rectly in front'of the plate 7 and as will hereinafter be more fully explained, the plates 7 and 13 operate simultaneously throughout a portion of their respective movements.

The recess 6 and the cover 8 thus form a housing for the plates 7 and 13, and the hammer 10.

The upper end of the late 7 has connected to it a bolt 15 whic passes through a bracket 16 which is supported on a bar 17. This bolt 15'has' a coiled spring 18' which is positioned between. the lower face of the bracket 16 and nuts 19 carried b said bolt 15. The upper end of said bolt is provided with nuts 20 which engage the outer surface of the bracket 16.

The bar 17 is moved upwardly and downwardly by means of an eccentric 21 which is secured to a shaft 22 mounted inthe main frame of the machine.

Eccentric straps 23 engage the eccentric 21, and the lower of said straps has an arm 24 which is pivotally secured at 25 to upwardly projecting ears 26 on the bar 17. Ilhis construction permits a positive upward movement of the plate 7, and a slightly resilient downward movement of said plate.

The spring 18 is made suiiiciently heavy, however, that the knife 14 will receive Suthcient power to shear the staple wire as will be more fully explained hereinafter.

l he upper edge of the plate 13 is recessed at 27 to form a pivotal bearing for a latch plate 28. This latch plate has a curved lower edge surface 29, and is notched at 30. A. pin 31 extends upwardly from the plate 13 into the notch 30 to prevent a longitudinal movement of the latch within the re-' eess 27.

The upper portion of the latch 28 has connected to it one end of a coiled spring 32, the other end of said spring being securedto a screw bolt 33 attached to the upper end of the plate 7.

The plate 7 has an angular groove 34 into which an angular extension 35 of the latch plate 28 projects and is held therein through the torsional action of the spring 32 (see Fig. 4). The latch 28 also has two extensions 36, each of said extensions having a cam face 37 designed to engage the upper ends of two rods 38 which are secured in the upper portion of the bracket 4. These rods 38 are so positioned as to engage the cam faces 37 of the latch 28 and deflect said plate against the action of the spring 32, said deflection being sufficient tomove the extension 35 of the latch plate out of th angular groove 34, (see Fig. 6).

The rear surface of the plate 7 is pro vided with a cam block 39 having an inclined upper surface 40. A forming lever 41 is pivoted at 42 intermediate of its ends, and has an arm 43 designed to be engaged by the cam block 39 so as to push a forming finger 44, which is positioned at the lower end of the lever 41, into a position between the cover plate 8 and the bracket 4 as clearly shown in Fig. 4, this movement being accomplished against the action of a spring 45 which tends at all times to move the forming finger outwardly and simultaneously move the arm 43 toward the plate 7.

The forming finger 44 is providedwith a gage pin 46 which is positionedtothe rear. of the front edge surface 47 of the forming finger 44. The function of this pin will be described hereinafter. I

The plate 13 has an opening 48 in which the hammer head 12 slides. The plate 13 also has an opening 49 which is grooved at 50 on opposite sides, and in which ribs 51 on the hammer 10, project and slide.

The grooves 50 communicate with the grooved lower end 52 of the plate 13, said teases? groove 52 terminating at the ends to form the knife edges 14. p

A wire guiding tube 53 communicates with the space between the cover 8 and the portion of the bracket 4 which forms the recess 6, and serves to direct the staple wire across the recess 6 and above the forming finger 44.

Guard blocks 54 are positioned within said recess and serve in conjunction with the pin 46 to confine the wire directly below the groove 52 within the plate 13, and also directly under the end of the hammer 10.

An upper feed roll 55 is pivoted on the bracket 4 and has its peripheral surface grooved at 56 (see Figs. 4 and 5).

A ratchet wheel 57 is secured to the feed roll 55 and is operated by a pawl 58 pivoted at 59 on a bracket 60, the latter being adj ustably supported on an arm 61, the latter receiving movement from a cam 62 on the shaft 22-. The operating connection between the cam 62 and the arm 61 consists of an anti-friction roller 63 mounted on a yoked arm 64, the latter being positioned to straddlet-he shaft between the cam 62 and a collar 65 on the shaft 22.

A bar 66 connects the yoked arm 64 with the arm 61, said cam acting to move the arm 61 downwardly, thereby causing the pawl 58 to engage and intermittently rotate the ratchet wheel 57.; The arm 61 may be raised by any suitable means, and in the present instance I have shown a spring 67 secured to the yoke arm 64 and attached to a super structure (not shown).

The pawl 58 is held in engagement with the ratchet teeth through the medium of a spring 68 which is connected to the bracket 60. .4 lower feed roll 69 is rotatable on a stud 70 carried by a lever 71, the latter being pivoted at 72 to the bracket 4.

A tension spring 73 connects the lever 71 and tends to move the roll 69 upwardly. A die block 74 is positioned between the bite of the feed rollers 55 and 69 and the wire guiding tube 53 and has a V-shaped groove in its upper surface as shown at 75.

A plunger 76 is movable vertically in guide members 77 which are secured to the bracket 4. lhis plunger is directly over the die block 74 and has a depending projection 78 designed to engage the staple-forming wire 79 (see Figs. 2 and 3) to form a V- shaped'bend in said wire as shown in Fig. 3.

The plunger 76 receives its downward movement due to an engaging action of a striking rod 80 carried by the bracket 16. The plunger 76 is moved upwardly, after being released by the striking rod 80, by a spring 81 which has one end in engagement with the lower guide member 77 and the other end attached, to the plunger, the spring being compressed when the plunger mittently feed the wire a distance equal to that existing between the middle of the groove 7 and the edge 82 of the plate 13, and considering that the wire is in the position shown in Fig. 3, and that the plunger and plates 7 and 13 are in the positionshown in Fig. 2, the operation is as follows:

The arm 61 descends due to the action of the'cam 62 and efiects the movement of the upper feed roll to feed the bent wire in the direction of the arrow shown in Fig. 3, it being noted that the previous severing of the wire through the middle of the ll-shaped bent portion caused the end 84 of the wire to assume the shape shown in dotted lines in said Fig. 8. This feeding movement of the wire causes the bent portion to be positioned directly below the lefthand knife edge 14, so that as the latter descends, it will shear the wire directly in the middle of said bent portion forming an end similar to that shown at 84 in Fig. 3. a

After the wire has been fed into said position, the timing'of the eccentri 21 is such as to move the bar 17 downward y and efiect' the downward movement of the plates 7 and 13, the latter receiving its movement through the medium of the latch plate 28. This downward movement continues until after the wire is severed.- The cam faces 37 on the extensions 36 then engage the latchdefiecting rods 38 and cause said latch to be moved out of engagement with the angular groove 34. The plate 7 continues to move downwardly and with it the hammer 10, the forming finger 44 having been moved into position to receive the severed wire on its upper surface, immediately to the front of the pin 46.

The plate 13 also continues downwardly, said downward movement being efiected through the medium of the spring 32. This movement of the plate 13 bends the wire over the forming finger 44 and into an inverted U-shape. The grooves 50 act to receive the leg portions of the staple thus 7 stormed.

The members of the article into which the staple is to be inserted, are positioned directly underthe bracket 4 and an anvil of any description may be placed below the article which is to be stapled.

The plate 13 continues to move downwardly until its bottom edge engages the article into which the staple is to be inserted, further downward movement of said plate 13 being thus prevented due to the resilient property of springs 32. The hammer, howto the engagement of the staple with the hammer, the forming finger 44 is moved rearwardly by the spring 45, since by this time the cam block has moved below the arm 43, so that the latter is permitted to move the required distance to permit the outward movement of the forming finger 44.

By this construction, it will be noted that the grooves serve to hold and guide the legs of the staple and that the ribs 51 on the hammer act to apply pressure in direct alinement with the legs of the staple, the body portion ofv the hammer acting to 911-: gage the central portion of the staple.

Furthermore, with this construction it is I practically impossible to shear through the head of the staple as is common in other stapling machines made prior to my present invention, since with my'improved construction, pressure is applied throughout the entirehead of the staple so as to impart an ever, continues to descend andjust previous even inserting or driving movement to the Y staple.

It will be understood, as shown in Fig. 3, that by forming the ii-shaped bend in the wire by means of the plunger '?7 6, and die block 74, and by severing the wire in the middle of this bent portion, 'inturned end portions are provided which, when the staple is driven into an article and engages the anvil, these turned edges will be deflected so as to practically reenter the article thus avoiding sharp end portions and preventing injury to the hands or clothing of a person who handles said articles.

After the staple has been inserted as above described, the plates 7 and 13 ascend and the arm 43 is moved outwardly by engagement with the cam face 40 of the cam block 39 to cause the forming finger 44 to be again moved into operative position to receive the next staple.

Tt will be noted that the pin 46 and the guard blocks 54' act to confine the wire and length of the wire which has been bent as above described, said bend in the wire being formed when the bar 17 moves downwardly to cause engagement between the striking rod 80 and the plunger 76.

In the foregoing description I have described the arm 61 as being actuated by the cam 62 through the medium of the bar 66. It will be noted, however, that the drawings illustrate but one unit in a basket making machine and any number of units may be included according to the number of hoops to be secured to the basket. It will thus be noted that the shaft 22, bar 17, and arm 61 extend throughout the length of the machine and support and operate a number of the elements comprising the separate units. For example, the arm 61 is supported at its opposite end by another bar similar to the bar 66, said latter bar being operated by means of another cam on the shaft 22, said other cam being similar to the cam 62 illustrated.

Nhile l have described my invention as taking a particular form, it will be understood that the various parts of my invention may be changed Without departing from the spirit thereof, and hence 1 do not limit my self to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

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

1; The combination in a stapling mechanism, of wire-feeding mechanism, means for forming a ii-shaped bend in the wire, means for severing the wire through the bent portions, and means for forming the severed wire into a staple, substantially as described.

2. The combination in a staplin mechanism, of Wire-feeding rolls, means Ior forming a V-shaped bend in the wire, a knife, means for moving said feed rolls to feed a predetermined length of the wire to move the bent portion into alinement with the knife, means for moving the knife to sever the wire at the bent portion, a d meansfor forming the severed wire into a staple, substantially as described.

3. lhe combination in a stapling mecha nism, of wire-feeding means, means for forming a ll-shaped bend in the wire, a knife, means for actuating said feeding means to feed a pre-determined length of wire to move the bent portion into alinement with the knife, means for moving the knife to sever the wire at the bent portion, a forming member, means for bending the wire over said forming member to form a staple, and means for driving said staple, substanti ally as described.

4. The combination in a stapling mechanism, of wire-feeding means, means for forming a V -shaped bend in the wire, a movable plate having a knife edge designed to severv said wire through the bent portion, said plate being provided with an opening and having grooves at each side of said opening, a hammer movable within said opening nae-Jena? and having ribs slidable within said grooves, a staple forming finger in alinement with said opening, said staple forming finger being positioned to receive the Wire thereover, said wire being bent by the cooperating portions of said plate and of each staple forming finger, means for moving said finger out of alinement with said opening in the plate, and means for moving said hammer to drive the staple, substantially as described.

5. The combination in stapling mechanism, of means forming a slide-way, means for forming a ii-shaped bend in the wire, means for feeding said wire to said forming means and then into said slide-way, a plate slidably fitting said slide-way and having a central opening and grooves at opposite sides of said opening, a hammer slidably fitting said opening and having ribs movable within said grooves, said plate having a knife edge adjacent one side of the slide-Way to sever the wire at the nicked portions, a staple forming member in alinement with said opening, said plate being movable to bend the staple over said forming member and to permit the leg portions ofsaid staple to enter the grooves, said forming member being movable out of alinement with said opening after the legs of the staple are positioned Within the grooves, and means for moving the hammer within the opening to engage and drive the staple, substantially as described.

6. The combination in a stapling mechanism, of a movable member provided with a groove, a hammer thereon, a member hav-.

ing a latch normally engaging said groove to form a positive movable connection between said members to cause said members silient means 'connecting said second mem her with the first member, and operative after the positive disconnection between the members to cause movement of said second member, substantially as described.

7. The combination in a stapling mechanism, of rolls for feeding staple wire, a die block having a notch therein, means for moving said feed rolls to feed the wire over the notch in the die block, means movable into engagement with the wire to press portions thereof into the notch to form a V- shaped bend therein, means for severing the wire through the bent portion, and means for making a staple from the severed wire, substantially as described.

8. The combination in a stapling mechanism, of rolls for feeding maple wire, a die block having a notch therein, a plunger, means for moving said feed rolls to feed the wire between the plunger and the notch in the die bloek; means for moving said plunger to press portions of the Wire into the notch to makeaV-shaped bend in the Wire a knife operative to sever the Wire at said bent portion, and means for making a staple of the severed Wire, substantially as de-. scribed.

9. The combination in a stapling mechanism, of feed rolls for the wire, a die block having a notch over 'Which the Wire is fed, a plunger having a depending projection movable to engage and make a V-shaped bend in said Wire and force a portion into the notch of said die block, a knife open ative to sever said Wire in the middle of said notched portion, and means for making a staple from the severed Wire, substantially as described.

10. The combination in a stapling mechanism, of means for feeding the staple Wire, notched die block over which the Wire is by said feeding means, a member having a projeotion, operative in conjunction with the not-h in the die block to make a J-shaped bend in the Wire, a member having 25 Wire-engaging portion of said die block to 30 act as a passage for said Wire after it is bent and during its movement across said slide-Way, means for causing the knife edge to cut the Wire and means for forming a staple from the severed Wire, substantially 35 as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

EECHMUND PARSONS.

Witnesses:

GEORGE JoaA, KEMME,

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