US946967A

US946967A - Machine for making paper bags.

Info

Publication number: US946967A
Application number: US49636109A
Authority: US
Inventors: Montefore L Hirsch; Maurice H Eichberg
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-05-17
Filing date: 1909-05-17
Publication date: 1910-01-18
Anticipated expiration: 1927-01-18

Description

M. L. HIRSGH & M.v H. EIGHBER-G. MACHINE FOR MAKING PAPER. BAGS. APPLICATION FILED MAY I7, 1909.

9469967.. Patented Jan. I8, 1910.

. 3 SHEETS-SHEET 1.

M. L. HIRSCH L M.. H. EICHBERG.

MACHINE FOR MAKING PAPER BAGS. APPLICATION FILED MAY 17; 1909.-

@ipge Patented Jan. 18, 1.9M).

3 SHEETS-SHEET 2.

Wi hmmm MACHINE POR MAKING PAPER BAGS.

APPLICATION :FILED MAY 17, 1909.

Patented Jan. 18,1910.

3 SHEETS-SHEET 3.

UNITEE sTATEs PATENT oEEioE.

MONTEFORE Il. HIRSCH AND MAURICE H. EICHBERG, 0F BALTIMORE, MARYLAND.

MACHINE FOR MAKING PAPER BAGS.

Specication of Letters Patent.

Patented Jan. 18, 1910.

Application filed May 17, 1909. Serial No. 496,361.

To all. whom it may concern;

Be it known that we, MoN'rEFoRE L. HIRSCH and MAURICE H. EICHBERG, citizens of the United States, residing at Baltimore, State of Maryland, have invented new and useful Improvements in Machines for Making Paper Bags, of which the following is a specification.

Our presentl `invention relating to paperbag manufacture, has to do with machines for feeding a tube of paper in the direction of its length, dividing the tube into sections, and closing each section at one end thereof to provide the same with a bottom.

The present invention contemplates the provision of means for applying paste to each paper-tube section and folding the same, in such manner that the closure of one end of the section is eifected properly and quickly and without retardation of the endwise passage of the sections so that it is practical to run the machine at a high rate of speed and secure a great output in a short period of time. This will be better appreciated when it is stated that machines constructed in accordance with our present invention and at present in practical operation, each effect the closure of 500 tube sections per minute, and that one of said machines recently effected the closure of 255,000 tube sections in a continuous operation of ten hours duration.

The present invention also contemplates the provision in combination with means for severing sections from a rapidly fed tube, of means for holding each section only during the infinitesimal period occupied by the said sepa-ration, and then permittin the section to move forwardly without hin rance or delay, this being materially advantageoussince it conduces to the runnin of the machine at a very high rate of spee With the foregoing in mind, the invention will be fully understood from the following description and claims when the same are read in connection with the drawings, ac-

com anying and forming part of this speciication, 'in which: y

Figure 1 is a longitudinal vertical section of so much of a paper bag making machine as is necessary to illustrate the best practical embodiment of our invention that we have as yet devised; the said section being taken in the plane indicated by the line l--l of Fig. 2. Fig. 2 is a transverse view taken in the plane of the line 2 2 of Fig. 1, looking the roll H opposite to that shown in Fig. 2.

Fig. 6 is a. detail perspective View showing a portion of the bag as-the same appears when tucked or folded. Fig. 7 is a similar view showing said portion as completely closed.

Similar letters of reference designate corresponding parts in all of the views of the drawings.

In the practice of our invention, the paper tube is formed and fed forwardly in the direction of its length in the ordinary well known manner or in any other manner consonant with the successful practice of our invention, and the bag sections are severed from the tube by the usual striker A, which operates from below upward, in combination with the serrated edges B and C, or by any other means suitable to the purpose.

, Forward of the transverse path of the striker A is a plate or other small support D over whichl the paper tube passes to the means for holding the tube sections only during the quick severance of the sections from the tube. The said holding means comprises narrow transverse bars or ribs E revoluble toward and from each other and adapted to meet with the tube section between them and hold said section only during the instant ofthe severance and to then release the section and thereby avoid retarding the forward progress thereof. v We prefer to arrange the bars E on the perimeters of opposed transverse rolls or shafts F of such diameter that ample clearance is afforded between their perimeters for the free and easy passage of the successive tube sections. When severed from the tube, each tube section is fed forwardly over a small plate or other support G until its forward 'y chine. The roll H is provided in itsperiphery with a tuck or fold-receiving opening J extending in the direction of its length, and in said opening J is arranged a tuck or foldclamping bar K that is movable laterally or sidewise toward and from the rear side wall of opening J, with reference to the direction in which the roll rotates. Carried by the rotary head I is a reciprocatory tucker-blade L and a paste-applier M, while interposed between the head I and a paste-receptacle N is a roll P adapted to receive paste from the receptacle and supply an adequate quantity of the same to the paste-applier M as the latter wipes past the roll.

When the forward portion of a tube section is received between the roll H and the head I, as before described, the tucker blade L, engaging the' tube section at a suitable distance behind the forward fend thereof, forces a portion of said section intothe opening J of roll H and thereby forms the transverse tuck or fold in the tube section. Thereupon the paste-applier M puts an adequate quantity of paste on the tube section back of the tuck or fold thereof. Then practically coincident with and immediately following the recession of the tucker blade, the bar K clamps and securely holds the tuck or fold against the rear wall of the opening J, and the tuck or fold is so held until it reaches a point between the roll H and a roll R which latter coperates with the roller H to press the flap ofthe tube against the paste-bearing major portion thereof and thereby completes the bottomin of the bag. After passlng between the rol s H and R, the bags are successively chuted between guide means S and guard means T to a conveyer U or any other means placed to receive the same.

The rolls F are mounted in the manner shown in Fig. 1 or in any other workmanlike manner, and are driven in the directions indicated by arrows through gearing that we have deemed it unnecessary to illustrate. It is well to state, however, that said rolls F are so timed that the bars E will meet with a tube section between them coincident with each coperation of the striker A with the serrated edges \B and C.

At V is a uard that we prefer to employ to prevent un u upward movement of the tube sections w ile en route between the rolls F and the coperating` roll H and head I. The roll H is rovided with trunnions h, 'ournaled in suitable frame work i, and the ar K is pivoted at c 7c in said roll and is backed and moved toward the rear wall of the opening J by spring strips Z shown in Figs. l and 5. At one end the bar K is provided with a crank m on which is a lateral projection n, preferably in the form of an anti-friction roller as shown, designed to coperate with a fixed cam W located adjacent one end of the roll H. It will be noted i by reference to Fig. l that the fixed cam W is provided at 1 with anabrupt shoulder positioned to permit at the proper time the before described movement of bar K toward the back wall of the opening J, and by comparison of Figs. l and Q it will be understood that at the proper point in advance of the shoulder 1*, the periphery of the cam is increased in diameter to coperate vwith the roller n and move the bar K away from the rear wall of the opening J and thereby release the tuck or fold of the tube section.

The rotary head I comprises a shaft having trunnions s journaled in the frame sides i, the paste-applier M, holders t for the paste-applier, which holders t are fixed by set screws u on the reduced intermediate portion of the shaft and are connected to the paste-applier by screws o, the recipro-v catory tucker blade L having end portions :v extending through and guided in slots c in the shaft, castinvs screwed or otherwise connected to the sa1d end portions m, and having shoes a kand inwardly extend-ing projections b', guides d suitably fixed onthe shaft and receiving the end portions and having wear plates e adjustably fixed by screws f and jam-nuts g', and coiled springs h interposed between the reduced or t1attened portion ofthe shaft and the projections b, and havino for their otlice to retract the tucker blade L. In order to project the tucker blade L against the action of the springs h', we provide parts i adapted to coperate with the shoes c,thevsaid;. arts i being preferably in the form of antiriction rollers loosely mounted on a trailsverse shaft j', connected through hangers lc with the frame sides. By virtue of this provision it will be manifest that incidental to each rotation of the head I, the antifriction rollers i', by co erating with the shoes a', will project the b ade L beyond the faceof the paste-applier M, and then when the shoes a ass out of engagement with the anti-frictlon rollers i, the springs la. will operate to retract the tucker blade L so that the latter will not interfere with the wiping of the face of the paste-applier M past the paste roll P. See in this connection the dotted lines in Fig. l. The paste roll P has trunnions m journaled in suitable bearings, and the roll R is provided with trunnions 7" journaled in movable bearings which are backed by springs such as 15'; the said springs havin for their office to yieldingly press the ro R against the perimeter of the roll H. c

One of the trunnions k of the roll H is equipped with a spur gear A which is designed to be connected with and derive motion from anotherrv rotary part of the machine through a train of gearing which we have deemed it unnecessary to illustrate, andone of the trunnions s of the head I is provided wth a spur gear B', intermeshed with ner disclosed in the patent.

thespur gear A', and also with a spur gear C on the trunnion m of the paste roll P.

We would also have it understood that while it isnot necessary to positively rotate the roll R through a spur gear connection, yet 1f deemed expedient such connection may be employed between the rolls H and R.

The gear connection described between roll H, head l and paste-roll P is substantlally the same as that shown in our prior patent Number 908,570 of November 10, 1908, the rolls F are connected by spur gears (not shown) in the same manner as the rolls I and J of said patent, the gear on the lower roll F is connected with the gear A. on roll H by an interposed gear (not shown) after the manner disclosed in the patent, and power is transmitted from a transverse shaft (not shown) to the gear on the lower of the rolls F, also after the man- The driving connection of the arts is, however, unimportant, and manifestly any appropriate driving connection may be employed in the discretion of the maker of the machine.

As before stated, the construction herein illustrated and described constitutes the best practical embodiment of our present invention of which we are at the present cognizant, but vit will be understood that in the future practice of the invention such changes or modifications may be made as do not 1nvolve departure from the scope of our invention as vdefined in the claims appended. Having described our invention, what we claim and desire to secure by Letters-Pat ent, is:

1. In a machine for making paper bags, the combination of a rotary device, a pasteapplier carried by said device, means for supplying paste to said paste-applier, a tucker blade carried by and movable outward and inwardwith respect to the rotary device, a second rotary device opposed to the first-named rotary device and having an opening to receive the tucker blade when the same is projected, means carried by and movable with respect to the second-namedl rotary device for taking hold of the tuck or fold in a bag, positive means for projecting the tucker blade of the first-named rotary device, resilient meansY for# retracting said blade when the same is out of engagement with the projecting means, resilient means for moving the tuck-holding means against a tuck coincidently with the retraction of the tucker blade, means arranged to cooperate with the second-named rotary dev1ce and press the portion of a bag at one side of the tuck therein against the portion of the` bag at the opposite side of the tuck, means for moving the tuckholding means away from the tuck whilesaid means is opposed to the pressing means, and bag-receiving and guiding means extending from the lower adjacent portions of the secondnamed rotary device and the pressing means.

2. In a machine for making paper bags, the combination of frame sides, han ers fixed thereto, a transverse shaft carrie by said hangers and provided with parts i', a rotary head comprising a shafthaving trunnions journaled in the frame sides and also having slots, guides vfixed on the shaft, a reciprocatory tucker blade havin end portions extending through and gulded in the slots of the' shaft and also guided in the guides on the shaft and provided with shoes and with inwardly extending projections, springs interposed between the shaft and the said inwardly extending projections, l

and a paste-applier, means for supplying paste to said paste-applier of the rotary head, a roll disposed below the rotary head and having trunnions journaled in the frame Isides and also having an opening adapted to receive the tucker blade when the same is projected, a bar pivoted in said roll and having at oneend a crank, spring strips backing said bar and adapted to move the same toward the rear wall of said opening, means arranged to coperate with said roll and press the portion of a bag at one side of the tuck therein against the portion of the bag at the opposite side of the tuck, a cam fixed to one frame side for coperating with the crank of the pivoted bar and moving said bar away from the tuck while said bar is opposed to the pressing means, a bag receiving and guiding means extending from the lower adjacent portions of the roll and the pressing means.

3. The combination in a machine for making paper bags,'0f frame sides, hangers xed thereto,`a transverse shaft carried by said hangers and provided with parts z", and a rotary head comprising a shaft having trunnions journaled in the frame sides and also having slots, guides fixed on the shaft, a reciprocatory tucker blade having end portions extending throu h and guided in the slots of the shaft an also guided in the guides on the shaft and provided with shoes and with inwardly extending projections,

and springsin'terposed between the shaft and the said inwardly extending projections.

4. The combination in a machine for making paper bags, of frame sides, han ers fixed thereto, a transverse shaft carrie by said hangers and provided with parts z", and a rotary head comprising a shaft having trunnions journaled in the frame sides an also having slots and a flattened portion, guides fixed on the shaft and having adjustably fixed wear plates, a reciprocatory tucker blade havin end portions movable in the slots and guides and against the wear plates of the latter, castings fixed on the said end portions and having shoes adapted to cooperate with the said parts z" and also having inwardly extending projections, and springs interposed between the said rojections and the at portion of the sha t.

5. The combination in a machine for making paper bags, of frame sides, han ers fixed thereto, a transverse shaft carrie b said hangers and provided with parts z' and a rotary head comprisin a shaft havin trunnions journaled in the graine sides an also having slots and a attened portion, guides iixed on the shaft and having adjustably fixed wear plates, a reciprocatory tucker blade havin end portions movable in the slots and guides and against the wear plates of the latter, castings fixed on the said end portions and having shoes adapted to coperate with the said arts z" and also having inwardly extendm projections, springs interposed between t e said projectlons and a lat portion of the shaft, a paste-applier arranged alongside the tucker blade, and holders connected to the pasteapplier and fixed on the Hat portion of the shaft.

In testimon whereof we have hereunto set our hands 1n presence of two subscribing witnesses.

MONTEFORE L. HIRSCH. MAURICE H. EICHBERG. Witnesses:

l H. M. GUnIscH,

E. M. THOMPSON.