US112005A - Improvement in paper-bag machines - Google Patents

Description

UNITED STATES PATENT OFFICE.

PETER EDWARD ARMSTRONG, OF PHILADELPHIA, PENNSYLVANIA.

.IMPROVEMENT IN PAPER-BAG MACHINES.

Specification forming part of Letters Patent No. 112,005, dated February 2l, 1871.

To all whom it may concern:

Be it known that I, PETER EDWARD ARM- STRONG, ot' Philadelphia, county of Philadelphia, State of Pennsylvania, have invented an Improved Paper-Bag Machine, of which the following is a specification My invention consists of certain mechanism for making paper bags, the construction and operation ot' the said mechanism being too fully described hereafter to need a preliminary explanation here.

The object ot my invention has been to produce a simple, cheap, and compact machine for converting tubes of paper into bags, the machine being especially adapted for use by grocers and others who desire to make paper bags for their own consumption.

Figure l, Sheet 1, is a side elevation of my improved paper-bag machine 5 Fig. 2, avertical section of' the same 5 Fig. 3,"Sheet 2, a plan view; Fig. 4, a transverse vertical section on the line l 2, Fig. 3; Fig. 5, a transverse section on the line 3 4, Fig. 3; and Figs. 6, 7, and 8, detached and enlarged views, illustrating portions ot' my invention.

A and A represent the opposite side frames of the machine, secured together by crosspieces c; and B is a platform or table, secured at one end to the frames, and supported by diagonal rods or brackets a. The drivingshaft C has its bearings in the vertically-slotted standards b and b ofthe opposite side frames, and is provided between the latter with a roller, D. The driving-shaft has also,

at one end, a crank, c, if it is to be operated y by hand, or a suitable'pulley if it is to be driven by power. A roller, D, having two or more projections or collars, e, Which bear upon the roller D, has its bearings in the standards b and b', and is arranged to yield vertically to a slight extent in the said standards, such movement being permitted by gum blocks d d, or other suitable springs, regulated by setscrews, which bear upon the journals ot' the said roller.

The object in cutting away the roller D', so as to form the collars e, is to permit the introduction between the same and the rollerD ot' a plate, F, which has slots f for the admission of the said collars. The plate F rests upon the table or platform B, is prevented from moving laterally by grooved rollersh lo and strips it on the said table, and is prevented from moving forward in the direction ot' the arrow, Fig. 2, to a point beyond a fixed cross-bar, G, on the frame of the machine, by

means of wheels jj, hung to the upper snr-A t'ace ot' the said plate, and having rounded edges adapted to the grooves in the wheels h h of the table. The knife or cutter H, by which the tube of paper from which the bags are to be made is severed, in the manner described hereafter, consists ot' a blade hung to, and arranged to freely oscillate in, the opposite side frames of the machine, and has, in the present instance, a serrated cutting-edge, which, when the cutter is raised, can be brought in contact with the cross-bar Gr. The cutter is prevented from falling to a point lower than is shown in Fig. 2 by a projection, k, coming in contact with any stationary part ot' the machine, and the said cutter is operated by means of a revolving arm, Z, which strikes this projection k, and which is hungto a spindle, I, arranged to turn in brackets m m on the side frame A, the said spindle deriving its motion from the driving-shaft through the medium of the bevel-gears n.

The folding` of' the tube of paper to form the bottoms ot the bags is effected by means ot' a vertically-reciprocating blade, p, and stationary folding-plates q q, secured to the frame of the machine, and arranged at a short distance apart from each other, as best observed in Fig. 8. Beneath these folding-plates there are two drawing-rollers, J J, which are clothed with gum-elastic, or other suitable l material, and which are driven by means ot' the cog-wheels rr, r1, andr2 from the drivingshaft C, as shown in Fig. l. One end of the reciprocating blade p slides in a grooved standard,pl, on the side frame A, and its opposite end is secured to a bar, 292, which slides in` guides p3 on the side frame A. rlhe bar p2 has a slotted arm, s, in which slides the pin s1 of a crank-wheel, s2, at one end ot' the spindle I, l

the desired vertical reciprocating motion being thus imparted to the blade l). A paste-reservoir, M, in which is a sliding` gate, t, to regulate thesupply ot' paste to the blade p, is secured to the frame ofthe machine at the rear ofthe said blade. The paste is fed to the latter when at thelimit of its upward movement by means of a plate, u, which is hinged to a swinging frame, u1, hung to the opposite sides of the reservoir, and having an arm', u2, which over-hangs the blade p, so that 1t may be raised with the latter. The plate u has a pin,

x, which is brought in contact with a bent arm, x, on the reservoir when the frame u1 is raised, so that the said plate may be thrown outward against the blade p, in order to deposit upon the latter the supply of past which it has raised from the reservoir. t

Operation: The machine can be driven by power; but it is more especially intended as a hand machine, to be used by grocers and others who desire to make paper bags for their own consumption.

The bags are not made from a hat strip or sheet of paper, but from paper manufactured in the-form of a tube without any joint, the machine being consequently much less complicated than those heretofore used, which first form the tube from a fiat strip ot' paper before proceeding to the formation of the bags. rlhe flattened tube of paper is wound upon a roller hung to the under side of thev machine-to' the crossbar g/ in Fig. 2, for instance-and the tube is passed upward around a roller, z, in the plate B, and is then passed over the plate F, the latter being containedentirely within the tube when the machine is in operation, as shown in Fig. 7. The tube of paper is'permitted to pass freely between the grooved edges of the wheels h, and the rounded edges of the wheels j; but the said wheels eff'ectu'aly prevent 'any forward movement of the plate F. The tube is fed forward to the folding and pasting devicesY and cutter H by means of the drawing-rollers D and D', the collarse c of the latter acting upon the paper, but, owing toY the slots f, being free from contact with the plate F;

' The operation of the folding and pasting devices is as follows: While the end of the tube 1s being fed toward the folding-plates q q, the vblade p' is raised, as shown in Fig. 2, and

supplied with paste by the plate u, and when l the end of the paper tube has been brought to the position shown in Fig. 6, the blade p descends and'forces the end of the tube` between the folding-plates q q, thus folding, and at the same time pasting, the same to form the bottom or closed end of the bag. The bag thus folded and pasted is drawn downward by means of the rollers J ,Land while securely held by the same, as shown in Fig. 7, is severed `from thel tube by the cutter H, the

iremos f action of the latterbeing as follows:- The plate F, which is contained'within the tube, extendsto a point beneath the edge ofthe cross-bar Gr, which the cutter strikes in its upper movement.A The said plate thus serves to separate the two sides of the tube, there being a space between them corresponding in vwidth to the thickness ofthe plate. The cutter crosscs'this space in severing the bag from the tube, as shown in' Fig. 7, so that, in consequence of the angle at which the cut-ter operates, one edge or side will project beyond the other, and the severed end of the tube will also be cut in a corresponding manner, so that in forming the bottom of the next bag the paste may reach both edges of the same, .and thus form a tight joint when the folding is completed.

rlhe cutter H, immediately after severing the tube, drops to its former position, Fig. 2, Aor may be furnished with a spring to accelerate such movement, in order that there may be no interruption to the further feeding of the tube andjformation vof the next bag.

A main peculiarity of my invention, and a point in which it differs most essentially from other machines of its class, is that the bottom or closed end of the bag is entirely completedv and rmly held before the said bag is severed from the tube. This insures a clean cut, the tube being held atpboth ends, so that there can be no danger of slipping.

vMy machine possesses several other advantages and peculiarities, among which may be mentionedits coinpactness and simplicity, these 4features rendering it of especial utility as a hand machine.n

l. The combination of the reciprocating knit'e H and the rotating arm Z, operating as Yset forth.

2. A reciprocating or vibratingblade, p, in combination with a plate, u, by which paste is transferred from a reservoir to the said blade, substantially in the .manner described. 3. The combination of the grooved rollers h h, wheels/j j, and plateF. In testimony whereoflhave signed my name to this specification in the presence of two subscribing witnesses.

A PETER EDWARD ARMSTRONG.

Witnesses: WM. A. STEEL, .Louis BoswELL.

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