USRE796E - Improvement in machines for making paper bags - Google Patents

Description

3 Sheets-Sheet -1.

P. WOLLE. MACHINE FOR MAKING PAPER BAGS.

Reissued Aug. 16

3 Sheets-Shet 2.

P. WOLLE. MACHINE FOR MAKING PAPER BAGS.

Reissued Aug. 16, 1859.

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3 Sheets-Sheet 3.

P. WOLLEy MACHINE FOR MAKING- PAPER BAGS.

Reissued Aug. 16, 1859.

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UNITED STATES PATENT OFFICE.

FRANCIS WOLLE, OF'BETHLEHEM, PENNSYLVANIA.

IMPROVEMENT IN MACHINES FOR MAKING PAPER BAGS.

Specification forming part of Letters Patent No. 20,838, dated July 6, i858; Reissue No. 796, dated August 16, 1859.

To all whom it may concern.-

Be it known that I, FRANors'WoLLE, of the borough of Bethlehem, in the county of Northampton and State of Pennsylvania, have inventcd new and useful improvements to be applied to machinery for making bags-of paper orjother suitable material, to facilitate the economical and rapid working thereof; and 1 do declare thatthe following is a full, clear, and. exact description of the construction and'operation of the same.

My invention consists, first, in a novel mode of combining and arranging a system of creasing and lapping mechanism for forming the bottom lap or seam of the bag, wherebyI prevent the loss of the strips of paper usually-cut off to make the bottom seam or lap of the bag. I

- It consists, secondly, in the forming of a lap in the manufacture of a bag of papernor other material-by the combination of a creasing-blade with two rolling-surfaces without the aid of any stationary edges or other contrivances.

It consists, thirdly, in a certain mode of applying the revolving lapper-shaft, in combination with the creaser and the apparatus for feeding the bags to the action of the creaser and lapper-sh'aft.

The accompanying drawings, making part of this specification, represent the parts embracing all the features of my new invention.

Figure l is a perspective view of the lapping apparatus. Fig. 2 is a sectional view of the lapping apparatus. Fig. 3 is a top view of the same, showing in red outline the posi tion of the paper to be cut and lapped. Fig. 4 is a sectional view of the revolving shaft used in lapping the side of the bag and the parts connected therewith. Fig. 5 exhibits the shape of the paper to be made into a bag and thepart to be lapped over. Fig. 6' exhibits the edge lapped over. Fig. 7 exhibits the paper folded ready for pasting and lapping. Fig. 8 is a plan of the partsconnected with the revolving shaft for lapping the side of the bag. Fig. 9, Sheet II, shows the gearconnection of the driving-shaft and the feedroller M.

In Figs..1, 2, and 3, a a represent a table or inclined plane, upon which the paper to be made into a bag is placed.

The feeding of the paper may be done by hand or byadditional machinery, as described in the specification of a patent granted to me the 29th day of May, 1S55.

In preparing a piece of paper for making a bag it is usual to cut off part of one edge, as B B, Fig. 5, so that the remaining part of the same edge can, when the piece is doubled, as 4 Fig. 7, be lapped over it to make thejoiut or seam in the bottomjof the bag. Instead of cutting off this part of the edge, B B, Fig. 5, I lap it over, as shown in Fig. 6, so that when the piece is doubled, as Fig. 7, the strip B B, Fig. 5, comes between the two sides of the bag. This is performed by whatI calla lap ping apparatus, consisting of three principal parts, the shear, the creaser, and the lapper. The shear is a metal blade, L, which hangs on a fulcrum-pin, 72:, Figs. 1 and 3.-

O is a fixed strip of steel, standing out 'at an obtuse angle from the lower part of the table, and against which the shearvblade cuts. The shear may be entirely of steel, or be made of wood or iron, with a strip of steel attached to it. It has an arm, u, made to extend under one arm, 1), of the creaser-frame. Around the fulcrum-pin m of the shear there is a coiled spring to raise and'to hold up the point of the shear-blade.

The creaser consists of the following parts C, Figs. 1, 2, and 3, is a dull-edged metal blade with a flange, c c, at each end set at right angles. This blade is movable on pins 0 0, running through the flanges'c cand the two arms, 1) I), of the rock-shaft E, hung on the centers dd and working in two bearings, d d. The blade 0 is held in its proper position by a spring, f, pressing on its upper edge. It is connected by the rod :0 to the spring is under the table a a. The lapper consists of a square shaft, T, swinging on the centers 9 g in the bearings g g, with a metal blade, G,

attached to the top of the shaft T and project-- ing over it on the side toward the table. H is an arm fixed to one end of the square shaft F.

I is a revolving shaft supported in bearings in the framing with two cams, i andj.

I ing under the shaft 1.

K is a'spring attached at one end to the Q bottom of the'table a, with an arm, k, project- This spring K is represented under Fig. 2"detachcd from the vtable to show the projecting arm k.

The paper being placed on the inclined plane 'or table a .n, Fig. 3, as represented in red outline, part of one edge of the. paper being under the shearblade Li,- under the creaser-blade O, and on the Iap ePedgeG, the shaft 1, Fig, 2, being made to revolve by gcar-connection with other parts of the machinery, or independently thereof, the cam'j will bear down on the spring by passing the arm 1:. The one end of the spring K being connected with the creaser-arm D by the rod w, the blade Gis brought down so that the lower edge will press upon the paper near the edge of the table in the direction of the line dotted with red, (Fig. 3,). the shearblade being so constrnctgd with an-arm, n, that the movement of thearm- -Dof the creaser-shaft will operate upon it when forced down. This will cause the shear to make a diagonal slit, a a, Fig. 5, inthe direction of the steel blade 0 0, Fig.3, against which it cuts. While the creaser-blade O is held down during the time the-cam j is passing over the length of the arm k the other cam, 'i, operates upon the arm-H by forcing it back. This.

brings the projection G of the shaft F against the creaser-blade 0,-thus turning over" the edge of the paper. The creaser-blade-being held merely by the spring f,itwill ield to the pressure of the projection G an escape from its grasp at the moment it bears hard upon the edge of the table, and so complete the lap, as represented by Fig. 6. The cams having passed the arm is of the spring K and the arm H of'the upper shaft, F, the creaser is .raised by the spring K and the lapper "brought to its former open position. by the spring 1;. This operation being completed, the paper is folded. into shape, ascxhjibited by Fig. 7, ready for pasting and lapping.

Next I describe the-revolving shaft for lapping the side of the-bag.

Fig. 4 is a sectional view, and Fig.8 a plan, of this improvement. U is the revolving lapper-shaft consisting of a small roller geared by a spur-wheel to the feed-roller M. i T is the driving-shaft, revolving in the direction of the arrow, Fig. 9, Sheet 2. g g and u u, are two aprons consisting of tapes running round the rollers R M and S N, with journals working i-n-bearings in the sides of the framing. The vroller M receives an intermittent rotary motion by meansof a. spur-wheel on one end of it, a, Fig. 9, Sheet 2, which gears another spur-wheel, b, Fig. 9, on the driving-shaft,

which has teeth on a part only of its circumferenc'e. motion for every revolution of the drivingshaft and then to become stationary for a time.

This causes the apron to receive one Fig. .7 placed upon the apron over the roller It. One of the movements of the aprons willserve to carry the folded paper forward toward the driving-shaft T so far that it will have the edge intended for the lap of the side of the bag upon the lapper-roller U, as represented in the red outline, Fig. 4. \Vhile in this position we suppose it to be pasted by means of proper mechanism, and immediately as this is done the shaft T, revolving in the direction of the arrow, the stud t operates upon the arm r of the creaser and brings down the blade S upon the'paper in the line 1 to, Fig. 7, where the lapping commences, which is closed to the edge of the upper side of the bag and forces it down-between the converging surfaces of the rollers M U, The rollers, hav' ing an intermittent motion, now revolve, the aprons are set in motion, and the paper is ca r.- ried down between the rollers,which, being set close together, finish the lap commenced by the entry of the creaser-blade s between the 0911- verging surfaces of the rollers M U. The creascr-blade s is raised as soon as detached from the stud t by the poise \V, attached to an arm, 1;, of the creaser-shnft.

I wish to be distinctly understood that the formation of the lap, as just above described,

is entirely effected by means of the creaser blade 0 and the rollers M U, and that the duty of the apron q q is merely to convey the ba g to the said rollers,'and that of the apron Z, merely to convey it away from the said rollers. The bag having passed between the rollers M U and been-delivered upon the apron Z, passes under the roller V,where it receives another slight pressure, preparatory to its beingdried.

I am aware that rollers have been employed previous to the date of this invention for finishing'the laps of paper bags after thesaid bags have been folded by the operation of creaser-blades in combination with other devices intervenm g between the said blades and the rollers. In such cases, however, the rollers had nothing to do with theactnal folding of the lap, and I do not claim the use of rollers when not constituting an essential part of the folding device; but

What I claim as" my invention is-.- p

1. The combination of the creaser G and lappers F G, arranged and operating substantially in the manner 'and for the purpose hercin described ands'et fort-h.

2. The,..folding of a lap in the manufacture scribed, the ereaser being brought into operaof n bag of paper or otherma-teriai by means tion on the lap during the intermission in the of a. creaser-blade and two rolling-surfaces opmotion of the feed rollers. crating in combination with each other substantially as herein described. FRANCIS WOLLE' 3. The revolving lapper-shuft, U in conlbi- Witnesses: nation with the creaser v s, the feed-roller M, JAMES H. VVOLLE, and aprons u q, substantially as herein de- JOHN F. WOLLE.

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