US2469055A

US2469055A - Stapling machine

Info

Publication number: US2469055A
Application number: US633677A
Authority: US
Inventors: Schafroth Werner
Original assignee: INTERNATIONAL STAPLE AND MACHINE CO
Current assignee: INTERNATIONAL STAPLE AND MACHINE CO
Priority date: 1945-12-08
Filing date: 1945-12-08
Publication date: 1949-05-03
Anticipated expiration: 1966-05-03

Description

May 3, 1949.

Filed Dec. 8, 1945 W. SCHAFROTH STAPLING MACHINE 4 Sheets-Sheet l m5 ATTO'RNEY May 3, 1949. w. SCHAFROTH 2,469,055

' STAPLING MACHINE Filed lbe 8, 1945 4 Sheets-Sheet 2

Fla

2 ,2

INVENTOR: ligmrmficmffiqm H5 ATTORNEY 4 Sheets-Sheet ,5

STAPLING MACHINE w. SCHAFROTH May 3, 1949.

Filed Dec.

' INVENTOR. My: 501M007 H/sATwR/m 'May 3, 1949. w. SCHAFROTH STAPLING MACHINE 4 Sheets-Sheet 4 Filed Dec. 8, 1-945 INVENTOR:

Hlb ATTORNEY Patented May 3, 1949 STAPLING MACHINE Werner Sohafroth, Brookline, Pa., assignor' to International Staple and Machine Company; Clifton Heights, Pa, a corporation of Pennsylvania Application December 8, 1945, Serial No. 633,677

7 Claims.

This invention relates to stapling machines and particularly to the type of machine that is used to secure the flaps or ends of closed cartons or containers where rotatable anvils are used for penetrating the material and clinching the staples, and where it is desired to adjust the penetration of the anvils into the material.

The invention is an improvement over similar machines of my prior patents, No. 2,080,634, dated May 18, 1937, and No. 2,234,808, dated March 4, 1941, in that means is incorporated in the ma chine for adjusting the distance the piercing anvil's penetrate into the material.

The stapling machine of the type with which this invention is concerned includes, as characteristic elements, a pair of penetrating anvils that are actuated by suitable operating instrumentaliti'es, and in particular instrumentalities by which the distance between the axes of the anvils and the face of the material from which the staples are driven be adjusted, as with this distance increased or decreased the amount of penetration of the piercing anvils may be regulated.

The purpose of the invention is to provide mechanical means in a stapling machine having rotary piercing anvils for limiting the amount of penetration of the said anvils into material upon which the machine is used.

Owing to the varied uses of stapling machines of this type wherein the machines may be used for stapling relatively thick materials, such as corrugated board, at one time and relatively thin materials, such as pasteboard of nominal thick ness, at another, it has been found necessary to provide means for regulating the distance the piercing anvils extend into the material, as where relatively thin materials are used the anvils may damage the contents of the container.

I-he object of this invention is, therefore, to control the amount of penetration of piercing anvils into material for clinching staples by making it possible to adjust the distance between the the axes of the piercing anvils and the face of the material being stapled.

The invention is primarily concerned with stapling' machines wherein staples are driven from the surface of flaps, ends of cartons, and the like, through the said flaps and against anvils extending from the machine, and positioned in the path of the staples on the inside of the material, or a machine wherein the staples are first driven into place and then clinching means is operated to pierce the materials, bend over the ends of the staples and then clinch the ends ofv the staples against the: inner surface of the material.

Another object ofthis invention is to providemeans for adjusting the distancepi'ercing anvils of a stapling machine penetrate into materials" being stapled, which may beincorporate'd in present types of machines;

A further object of the invention is to provide means for adjusting the penetration of piercing a As in materials being stapled, which maybe o erated from a common point to adjust both sides of the machine.

A still further object of the invention is to provide adjusting means forregul'ating the penetration of piercing anvils of stapling machines into in terial which is of substantially rigid construction whereby the parts will withstand shock and relatively hard wear.

With these and other objects in view, the invention embodies a pair of legs slidably mounted in a stapling machine with means adjusting the distance the legs may extend beyond the limits of the machine, or means adjusting the distance between the axes of clinching anvils and the end of the machine so that the'distance rotary operating anvils may penetrate into materials being stapled may be adjusted,

For a full and more'complete understanding of the invention reference. may be had to the following description and: accompanying drawings wherein:

Figure l is a view showing a side elevation of the stapling machine with the head or vertical part shown in section.

Figure 2 is a view showing a: front elevation of the machine with the front plate removed, illustrating the relativepositions of'the anvil operating instrumentalities before downward movement oi the plunger starts.

Figure 3 is a similar view illustrating the second positions of the parts in which the anvils have been actuated to operative positions.

Figure 4 is also a similar view illustrating thecontinued travel of the plunger wherein the staple Figure 5 is a view showing. a rear elevation of' the machine with the staple bar shown in section, illustrating an alternate design. in which elevating plates are operated in unison.

Figure 6 isaview showing.- the rear elevationof the machine with theupper' par-t brokenaway and with the staple bar in; section, illustrating another alternate design: in which. the. distance.-

between the axes of rotating anvils and the end of the machine may be adjusted.

Referring now to the drawings wherein like reference characters denote corresponding parts, a stapling machine made in accordance with this invention is illustrated wherein numeral 10 indicates the casing of the machine, numeral ii a leg at the rear of the machine through which staples are provided to the feeding mechanism, and numeral [2 a handle by which the machine may be operated.

The casing I is illustrated as being of rectangular shape in cross section, although it may be of any suitable shape, and in the lower part is a partition l3 in which staple clinching anvils l4 and I5 are rotatably mounted on shafts I5 and II. On the ends of the shafts l6 and I! are arms l8 and I9, which are connected by

links

20 and 2| to

links

22 and 23, as shown, and the upper ends of the

links

22 and 23 are pivotally mounted on a pin 24.

Rollers

25 and 26 are mounted on the links and at the pivotal connections between the

links

20 and 2|, and the

links

22 and 23, providing operating means through which the links may be operated by cam grooves 21 and 28 in the plunger 29 into which the rollers extend. The cam grooves are in the face of the sliding plunger 29, which is operated by the handle [2, the handle being pivotally connected to the plunger between ears 38 at the upper end thereof through a pin 3| and pivotally mounted through a link 52, to ears 33 on the front of the casing.

The plunger 29 is provided with an extending plate 34 which, as the plunger is moved downward, drives a staple 35 into material against which the machine is placed. The staples may be fed by a follower 36 of the usual type through the leg H or by any means.

In order to adjust the penetration of the piercing anvils I4 and i5, plates 3'5 and 38, as illustrated in dotted lines in Figure 2, are slidably mounted in the casing and these may extend beyond the end of the casing providing legs therefor, as illustrated in Figure 2. These plates may be adjusted by adjusting

nuts

39 and 40 on the opposite sides of projections 4! at the sides of a bail or handle 42. The nuts 39 and 4%) are screwed on threaded stems 43, extending upward from the ends of the plates. These parts are similar on opposite sides of the machine so that the same reference numerals apply to both. The nut 40 may be run down on the thread and then the nut 39 tightened to draw the legs inward, and the operation of the nuts may be reversed to force the legs outward to the position illustrated in Figure 2. By this means, the elevation of the base of the machine may be adjusted in relation to the surface of materials upon which the machine is used, whereby the penetration of the anvils into the materials may be adjusted. As the plunger travels downward, as shown in Figures 2, 3, and 4, the plate 29 also travels downward, carrying the

rollers

25 and 26, which first move inward toward the center, travelling in the horizontal sections at the lower ends of the grooves 21 and 28. In this movement, the anvils are actuated from the position shown in Figure 1 to that shown in Figure 3, and as the rollers 25 and. 2B are retained in these positions by the vertical sections of the slots 21 and 28, the anvils will be held in their operative positions. Then with the continued downward movement of the plunger, the vertical sections of the grooves 21 and 28 pass downward over the rollers, permitting continued travel of the plunger and staple clinching plate 34, and the downward travel of the plate 34 is only limited by the engagement of the lower end thereof with an obstruction, or until the upper ends of the vertically disposed sections of the grooves 21 and 28 reach the rollers. It will be noted in Figure 4 that the grooves 27 and 28 have sufficient length to permit the lower end of the plunger to pass beyond the base of the machine.

An alternate form of the invention is illustrated in Figure 5 wherein the sliding plates are indicated by the numerals 44 and 45, and these are moved upward and downward by

levers

46 and 41 pivotally mounted on pins 48 and 49 on the back of the machine. The ends of the levers are provided with slotted holes 50 and 5! into which pins 52 and 53, fixedly mounted on the plates 44 and 45 extend, and as the ends of the levers move upward the pins will travel upward in slots 54 and 55 in the back of the casing. The levers 46 and 47 are pivotally attached to the head of a screw 56 through a pin 51, and the screw is mounted between ears 58 and 59, having an adjusting nut 60 thereon to move the screw upward and downward to adjust the position of the plates 44 and 45 through the levers. In this design the adjusting nut GI) may be turned and this will in turn slidably operate the plates 44 and 45 so that both may be moved in unison exactly the same distance.

In the design shown in Figure 6, adjusting means is provided at the rear of the machine to raise and lower a partition 6| corresponding to the partition is shown in Figure 1 and in which anvils t2 and 63 are mounted through shafts 64 and 65. The partition 6! is vertically slidable in grooves 66 and 5'! in which the plunger 29 also travels and the position of the partition may be adjusted by

knobs

58 and 69 on the ends of levers ill and ll, which are pivotally mounted in the casing through shafts i2 and #3 extending inward through the rear of the casing. The knobs t8 and to extend into slots 14 and F5 in the partition 6!, and as these knobs travel upward and downward by turning the adjusting nut to on a screw it they will in turn operate the partition so that it will move upward and downward, thereby changing the distance between the axes of the shafts 64 and 55 and the base of the casing, the casing being indicated by the numeral 18.

The screw 1'? is provided with traveling nuts 19 and and to these, arms 8i and 82, extend ing upward from the

shafts

12 and 13 are pivotally connected by pins 83 and 84. The screw l? is rotatably held in ears 85 and 8'6 on the back of the casing and is provided with right hand screw threads at one end and left hand threads at the other. It will be understood that these levers with their actuating instrumentalities may be arranged in any other manner whereby the axes of the anvils may be adjusted in relation to the end or face of the machine.

The construction of the machine will be readily understood from the foregoing description. The

machine may be provided as shown and described in any of the various designs and, by adjusting the plates or legs, or the partition in which the piercing anvils are mounted, the amount of penetration of the anvils into materials may be adjusted to compensate for materials of different thicknesses and also materials of different compositions.

While a preferred specific embodiment of the invention is hereinbefore set forth, it is to be 5 clearly understood that the invention is not to be limited to the exact construction illustrated and described because various modifications of these details may be provided in putting the invention into practice within the purview of the appended claims.

What is claimed is:

1. In a stapling machine of the type having a base with rotary anvils adapted to extend in the path of staples and beyond the base of the machine, means for rotating the anvils, and means for adjusting the distance of the base of the machine from materials being stapled.

2. In a stapling machine of the type having a base with rotary anvils adapted to extend in the path of staples and beyond the base of the machine, means for rotating the anvils, and means for adjusting the distance of the base of the machine from materials being stapled, said adjusting means comprising legs adapted to move downwardly from the base.

3. In a stapling machine of the type having a base with rotary anvils adapted to extend in the path of staples and beyond the base of the machine, means for rotating the anvils, and means for adjusting the distance of the base of the machine from materials being stapled, said adjusting means comprising legs adapted to move downwardly from the base by means of manually adjustable nuts.

4. In a stapling machine of the type having a base and rotary anvils adapted to extend in the path of staples and beyond the base of the machine, means actuating the anvils, and means adjusting the distance of the base of the machine from materials being stapled, said adjusting means comprising a pair of legs slidable vertically in the machine and adapted to be adjusted downwardly from the base by means of nuts screwed on threaded stems.

5. In a stapling machine of the type having a base with rotary anvils adapted to extend in the path of staples and beyond the base of the machine, means for rotating the anvils, and means for adjusting the distance of the base of the machine from materials being stapled, said adjusting means comprising a pair of legs mounted for vertical sliding movement in said machine and adapted to be extended below said base by means of links pivotally attached to each leg, said links being pivotally attached to a single screw adapted to be adjustably moved by means of an adjusting nut for control-ling the degree of extension of said legs.

6. A stapling machine comprising a casing, anvils rotatably mounted in the lower part of the casing and positioned to extend beyond the base of said casing when rotated, arms fixedly attached to the anvils extending upward into the casing, means connected to said arms for operative movement thereof to rotate the anvils to operative positions, means driving staples from the casing against said anvils, and means for adjusting the distance of the base of the casing from the materials being stapled, said anvil rotating means and said staple driving means being operated in the sequence that the anvils pierce the material against which the machine is placed, and the staple driving means thereafter clinches the staples forced through the material and against the anvils.

7. A stapling machine comprising a casing, an- Vils rotatably mounted in the lower part of the casing and positioned to extend beyond the base of said casing when rotated, arms fixedly attached to the anvils extending upward into the casing, means connected to said arms for operative movement thereof to rotate the anvils to operative positions, means driving staples from the casing against said anvils, and a pair of legs adapted to be adjustably extended from the base of said casing by means of manually adjustable nuts for adjusting the distance of the base of the casing from materials being stapled, said anvil rotating means and said staple driving means being operated in the sequence that the anvils pierce the material against which the machine is placed, and the staple driving means thereafter clinches the staples forced through the material and against the anvils.

WERNER SCHAFROTH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,363,640 Campbell Dec. 28, 1920 1,878,417 Matveyeff Sept. 20, 1932 1,945,377 Posnack Jan. 30, 1934 2,012,027 Taylor Aug. 20, 1935 2,054,548 Matveyeff Sept. 15, 1936 2,080,634 Schafroth May 18, 1937 2,153,874 Posnack Apr. 11, 1939 2,182,594 Matveyeff Dec. 5, 1939 2,234,808 Schafroth Mar. 11, 1941 FOREIGN PATENTS Number Country Date 546,715 Germany July 1, 1932 605,297 Germany Nov. 8, 1934