US 14643 A
Description (OCR text may contain errors)
3 Sheets-Sheet 1.
W H LOW ENVELOP MACHINE.
No. 14,643. Patented Apr. 8, 1856.
W. H. Low. ENYELQ'P MACHINE.
No. 14,643. Patented Apr. '8, 1856.
3 Sheets-Sheet 3.
W. H. LOW. ENVBLOP MACHINE.
No. 14,643. Patented Apr. 8, 1856.
w WMWM UNITED STATES PATENT OFFICE.
WM. H. LOW, OF ALBANY, NEW YORK.
MACHINE FOR MAKING- ENVELO'PS.
Specification of Letters Patent No. 14,643, dated April 8, 1856.
To all whom it may concern Be it known that I, WILLIAM H. Low, of the city and county of Albany and State of New York, have invented a new and useful Machine for the Manufacture of Envelops from a WVeb or Continuous Sheet of Paper;
and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in which Figure l is a side elevation, showing a portion of the working parts in section; Fig. 2, a plan, (with a portion of the upper works removed to exhibit more clearly the operation of the machine,); Fig. 3 a front elevation; Fig. 4 is a front view of the folding plate and holders; Fig. 5 a back view of the folding plate, and the apparatus for operating the folders; Fig. 6, a front view of the sliding head, showing the position of the knife; Fig. 7, an enlarged view of the cam movement, showing its operation; Fig. 8, an enlarged side view of the folders; Fig. 9 a front view of same.
A, is the framework; B, a face plate having in its center a hole of the size of the finished envelop; C, a sliding head to which the knife, creasing block, and lower gummer are attached; 0, rod or pitman to sliding head; 0, a pin between two disks, and working into a notch in the end of the rod 0; D, a hollow slide, or follower, having a perforated head of the size of the finished envelop; d, a cam, composed of an outside and inside form, forming a groove in which the pin of the crank d, runs, thereby giving the requisite motion to the slide D to which the cam is attached; cl a valve in top of slide; d, a spring, or bar, so constructed as to allow the valve to pass freely under it as the slide is drawn back, but which raises it as it returns forward, allowing it to again close before the full stroke is completed; E, e, e, shafts having the same rate of speed; F, F, F, F, miter wheels; G, cog wheel; g, pinion; 9, double arm; 9, driving crank; 9, a pawl working into the cogs of the wheel G,these combined forming the driving apparatus to the feeding rollers; H, a reel for holding the paper; I, a wiper for operating the folding apparatus through the means of the lever 2', and itsc0nnections; J, a knife formed to the shape of the blank to be cut, and so arranged that its upper edge leaves the paper out to nearly L a receiver for heatin air b means of a lamp, or other device; M, an air pump; m, valve seat, or chest, for same; 011/ a suction pipe, to which is attached a flexible tube connecting to the follower D, m, an eduction pipe having one of its ends connected to the receiver L, m a hot air pipe having its side next the paper perforated: N, N, reservoirs for liquid gum; n, n, pipes for conveying the gum from the reservoirs to the gummers; O, O, feeding rollers; O, O, tension rollers for keeping the paper in a state of tension while being operated on by the knife and gummers, both pairs of theserollers are held in contact by means of screws, springs or other mechanical device; P, P, guide rods for sliding head C; Q, a crank for working air pump. R, R, R, R, fingers or folders hinged to the slides 7", 1", 1", r, by which they are moved; .9, s, s, s, springs for holding the points of the fingers raised; T, a sliding bar; t, t, t, levers connected with, and operated by, sliding bar T; 6', connection between sliding bar T, and working lever 2', U, the folding plate, upon which the folding apparatus is placed; V, creasing block; W', projection on back of the fingers R; X, projection on front of the fingers R, by means of which they are closed as they slide in cont-act withthe sides of the head of the follower D. The continuous red line in Fig. 1, shows the'course of the web of paper from the reel to. the feeding rollers.
In operating the machine, motion is given to the shafts E, e, e, which carries the pin 0, into the notch in the endvof the rod 0, when, as the revolution is continued, the sliding head 0, is carried forward forcing the knife over the blocks j, j, j, j, shearing out the blank from the intervening web of paper, after which the sliding head is car ried back by springs 79,19 to its first position, when the notch in the end of the rod is caused to be freed from its contact with the pin by the revolution of the shafts,thus
the cut is made during a very short portion of the revolution of the machine.
As the blank is cut out it is gummed on the edge of one of its flaps, by means of a gummer placed inside of the knife; this gummer as well as the other used in this machine is made of a metal rim, filled with sponge, or other porous material, and connected to the reservoir N, by means of the pipe n; the motion of the head C, also moves forward the upper gummer 73', by means of the levers K, 70, 7c, and their attachments, thereby applying the gum to the paper intended for the sealing flap far enough in advance of its being cut to admit of its being dried by means of a current of heated air forced upon it by the air pump M, receiver L, and their attachments as hereinbefore described.
After the blank is cut and gummed, it is forced against the face of the perforated head of the follower D, by the creasing block V, which also creases it to the form. of the folded envelop, and causes it to cover v the perforations in the head of the follower. Slmultaneous with this operation a vacuum is formed 1n the follower D, by means of the air pump M, and suction pipe m, hold- I ing the blank to the face of the follower, by 3 means of the pressure of the atmosphere,
while it is drawn back through the hole in the plate B, by means of cam cl, and the crank (Z, whereby the flaps receive a preliminary fold nearly at right angles with the face of the envelop; the follower is drawn back until it passes into the opening of the folding plate U, where it remains at a state of rest during about a fourth of a revolution of the crank, as represented in' Fig. 7, the peculiar form of the cam al1owing the pin to pass freely through the groove where the same is made coincident with the circle described by the crank pin, while the follower is thus standing at rest, the wiper I, strikes the end of the lever 2', thereby movin the slidin bar T which movin b b 7 2D the levers t, t, t, force forward the slides r, r, r, 7-, and their respective folders, in the'following succession, at the first movement of the bar T, by means of the levers t, t, the slides r, r, move forward, their fingers folding down the end flaps, when the sliding bar has made one half its movement the slot upon its side strikes the pin of the lever t, moving forward the slide r, and its finger,'making the freshly gummed flap adhere tothe two end ones. Finally when the bar has completed about two thirds of its movement, the slot in its lower end strikes the pin in the slide, r, moving it forward, its finger completing the folding of the flaps, when the bar, T, is again drawn back by means of springs, or other mechanical device. The fingers, R, are hinged to the slides, r, and their points slightly raised by means of the springs, S, acting on the projections, W, until the slide works up in contact with the sides of the head of the follower, D, the projections, X, strike, and fold down the fingers closely.
By this combination of the sliding and folding movement the danger of rubbing the paper away from over the perforations is obviated, and a smooth fold obtained. After the folding has been completed, and the fingers drawn back, the follower, D, is moved forward sufficiently to allow the envelop to drop clear of the fingers, when the valve, d, striking the end, or the point, of the spring (Z, is raised, admits air, and breaks the vacuum in the follower, D, thereby allowing the envelop to drop from the face of the follower, which again remains at a state of rest for nearly a fourth of a revolution, affording time for the envelop to drop out of the way, when the pin of the crank, d, striking the straight portion of the cam forces the follower forward ready to receive the next blank.
The feeding of the paper, which is efiect- .ed while the knife is standing at rest, is
the rollers, by which means motion is given to the rollers during one half of the revolution of the machine, they remaining at rest during the remainder of it.
I do not confine myself to the particular manner herein described of giving motion to the sliding bar, T, as it may be effected with equal facility by other mechanical devices, nor do I confine myself to placing the adjustable blocks, 7', j, j, inside of the knife, as they may be made equally effective on the outside of it, by making the cutting edge on the outside of the knife.
I am aware that atmospheric pressure has been previously employed in envelop machinery simply for the purpose of feeding the blanks to the folding apparatus. I therefore do not claim its use for that purpose.
What I claim as new and desire to secure by Letters Patent is l. The cutting out of the blank by a shearing cut, substantially as herein described, and for the purpose of making a smooth out.
2. I claim the position of the knife to economize the waste of paper, substantially as described.
3. I claim, drawing the blank through the hole in the face plate, B, thereby giving to the flaps a preliminary fold.
4. I claim, holding the blank by means of atmospheric pressure While the folders hollow slide, D, and for the purposes set are operating. forth.
5. I claim, the adjustable blocks 7', j, j, j, 9. I claim, the mode of folding the finger,
substantially as described. R, substantially as described and for the 5 6. I claim, drying the gum for the sealpurpose set forth.
i in flap by means of a current of heated air. T I claim, feeding the paper to the knife WILLIAM by means of the feeding rollers, O, O. Witnesses:
8. I claim, the cam movement, substan- JAMES A. GREIG,
l0 tially as described, in combination with the JOHN G. FELLMAN.