US544314A - Chusetts - Google Patents

Description

(No Model.) 3 SheetsSheet 1.

E. M. LOW & W. B. EMERSON. ENVELOPE MAGH'INE.

No. 544,314. Patented Aug. 13, 1895. am

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UNTTED STATES PATENT EEicE.

EVERETT M. LOW AND .WILLIAM B. EMERSON, OF WORCESTER, MASSA- CHUSETTS, ASSIGNORS, BY MESNE ASSIGNMENTS, TO THE WORCESTER ENVELOPE COMPANY, OF SAMEPL ACE. I

ENVELOPE-MACHINE.

SPECIFICATION forming part of Letters Patent No. 544,314, dated August 13, 1895. Application filed August 21, 1888- Serial No. 283.377. (N0 modeLl To all whom it may concern.-

Be it known that we,'EvERETT M. Low and WILLIAM B. EMERSON, citizens of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Envelope-Machines; and we do hereby declare that the following is a full, clear, and exact description thereof, which, in connection with the drawings making a part of this specification, will enable others skilled in the art to which our invention belongs to make and use the same.

Our invention relates to en velope-machines, and more particularly to those parts of an envelope-machine which are employed in gumming the envelope-blank and raising it from the pile of blanks in proper position to be taken by a reciprocating carriage to the folding mechanism.

The improved guinming mechanism of our toward and away from the gum-box roll and over the gumming surface of the pick-ups.

The object of our invention is to improve upon the construction of those parts of an envelope-machine above referred to and to simplify their mode of'operation and 'to secure better results than have been secured hereto- Our invention consists in certain novel features of construction and operation of the gumming mechanism, the pick-up mechanism, and the mechanisms connected therewith of an envelope-machine, as will be hereinafter fully described.

We have shown in the drawings only such parts of an envelope-machine as are connected with our improvements, to enable those skilled in the art to understand the construction and operation of the same.

Referring to the drawings, Figure 1 is a front elevation of a portion of an envelopemachine known as the gumming mechanism with our improvements applied thereto. Fig. 2 is a plan view of the parts shown in Fig. 1. Fig. 3 represents, on an enlarged scale, a plan view of the gum-box roll and of the gumming-rolls. Fig. eshows, on an enlarged scale, a detail of the pick-ups for gumming and raising the envelope-blanks. Fig. 5 shows, on an enlarged scale, an end view of one of the gumming-roll carriages, one-half being shown in section. Fig. 6 shows, on an enlarged scale, a longitudinal sectional view of the gummingroll carriage, taken on linear as, Fig. 5. Fig. 7,

on an enlarged scale, is a sectional view of the gumming-rolls and operating-gears, taken on line y y, Fig. 3. Fig. 8 is an end view looking in the direction of the arrow at, Fig. 9, showing the cams supported below the bed of the machine and the mechanism for connecting them with the parts which they operate; and Fig. 9 is a front viewof the cams and mechanisfin shown in Fig. 8, looking in the direction of arrow 1), same figure.

In the accompanying drawings, A is a portion of the bed or table of the machine upon which the gumming and other mechanisms are supported, and below which are supported in suitable bearings the main driving-shaft M, carrying the driving-pulley N, and the shaft 0, geared to shaft M by gears P and Q, fast on said shafts.

B B are stands attached to the upper side of the table A and supporting the gum-box C, shelf D, and upper stands or brackets E E. (See Fig. l.)

F is a table carrying a pile of envelopeblanks F and havinga vertical reciprocating motion in Ways in the stand F attached to the table A and operated by an ordinary blank-feeding motion to cause the blanks to be moved up at the proper time to be seized by the pick-up mechanism.

G G are the pick-ups for gumming the seal and back flaps of the envelope after the lower surface of said pick-ups have been wiped over by the gummingroll. Said pick-ups are attached to a horizontal rod G held by a vertical screw-threaded rod G connected to and carried by a sliding plate G sliding in ways a a, supported by the brackets E E. (See Fig. 1.) The sliding plate G is given a reciprocating motion in a vertical direction to cause the pick-ups G G to move up and down by means of the link G crank-arms G on the shaft G jourualed in bearings supported on the brackets E E, and having an arm G at its opposite end, and the rod G connected with said arm, (see Fig. 1,) and the lower end of said rod G pivoted to an arm V, hinged at its opposite end at U, (see Fig. 8,) and carrying a roll S, which extends into a groove in the cam T, fast on the shaft 0. (See Fig. 9.) The revolution of said cam imparts the proper reciprocating vertical motion to the pick-ups G G, through the intervening mechanism between said pick-ups and cam, to cause said pick-ups to be brought into contact with the top blank on the pile of blanks F and to raise said blank to be carried oif to the folding-machine.

The horizontal rod G carrying the pickups G and G, also carries an arm G with the outer end bifurcated and forming a bearing for the vertical shaft G, to which the pickup G is attached for the purpose of gumming the under surface of one of the side flaps of the envelope-blank. (See Fig. 1.)

The vertical shaft G passes through the lugs G between which is held an arm G having a spline connection with shaft G (see Fig. 4,) but held from longitudinal movement on the shaft by means of lugs G The arm G is given avibratory motion to cause the pick-up G to be operated at the proper time by means of the connecting-rod G sliding in bearings G on the bracket E, and bellorank lever G", pivoted on said bracket, and connecting-rod G, which carries a roll G which is operated by a cam G on the shaft and has a' spring G attached to its lower end. (See Fig. 9.)

By means of the cam G and the intervening mechanism the pick-up G is moved from the position shown by full lines, Figs. 1 and 2, to the position shown in Fig. 4, in which position the gumming-surface of the pick-up i is brought into line with the gummingsurface of the back-flap pick-up G, so the same gumming-roll will serve to gum both the pick-ups G and G with a short traversing motion.

During the descent of the pick-ups G and G upon the pile of envelope-blanks the side pick-up G is moved from the position shown in Fig. 4 one-quarter of a revolution to the position shown in Figs. 1 and 2 and into position to gum the side flap of the blank, and as the pick-ups G and G are again raised the side pick-up G is carried by the movement of the bell-crank lever G and connected mechanism to the position shown in Fig. 4, the vertical shaft G sliding through the arm G.

Brackets E E have bosses b, through which pass horizontal rods E to whose outer ends are attached guide-rods F. (see Fig. 2) by means of the rods E (see Fig. 1,) whose screwthreaded ends pass through holes in the ends The guide-rods E are parallel with each other, and they form the ways for the gumming-roll carriages, which are shown in enlarged views in Figs. 5 and 6, and which consist of sleeves E provided with the tapering chambers E, in which are placed the washers or disks H, preferably of leather or rawhide. The chambers are closed by the plates E and by means of said plates E the leather washers H are compressed upon the guide-rods by means of screws d, passing through lugs e on the plates E and being screwed into lugs fon the sleeves E (See Fig. 3.)

The blocks E furnish bearings for gumming-roll shafts E and E carrying the gumming-rolls E and E and the pinions E and E fast on said shafts. (See Fig. 3.) The blocks 3. are suspended beneath the sleeves E and are pivoted thereto by means of pointed screws or centers g. (See Fig. 5.) Studs 72. are secured in the outer ends of the blocks E at each side of the machine, (see Fig. 3,) upon which is held one end of the connecting-rods E connecting the blocks E with the arms E upon rocking shaft E journaled in bearings upon the table A, (see Fig. 1,) and having a radial arm E fast thereon and connected by a rod E pivoted at E on a vertically-moving lever-arm E having a spring E at its lower end and carrying a roll E engaging with and operated by a cam E on the shaft 0. (See Figs. 8 and 9.) By means of cam E and the intervening mechanism a traversing motion is imparted to the blocks E and the sleeves E causing the gumming-rolls connected therewith, as will be hereinafter described, to be moved back and forth under the pick-up arms.

when the gumming-rolls are moved by the pushing action of the arm E or toward the right in Fig. 1, the blocks E are rocked upon the centers g until the swinging motion of said blocks E is limited by their being brought into contact with the sleeves E the sleeves E being meantime held from sliding by the friction of the leather washers H on the guide-rods E thereby bringing the shaft E and gumming-rolls E higher than the shaft E and rolls E and with the surface of the gumming-roll E in contact with the gumming-surface of the pick-ups G, G, and G.

In Figs. 1 and 2 the gumming-rolls are shown at the extreme endof their movement toward the right and the roll E in contact with the go m-box roll 0, from which the gumming-rolls E and E receive a supply ofgum.

Beneath the shafts E and E of the gum rolls E and E when the same are in the position shown in Fig. 1, is journaled in bearings on the shelf D a shaft J, carrying a pinion J, (see Fig. 3,) which is engaged by a sliding rack J having an intermittent sliding motion in ways on the shelf D and actuated by lever J connected at its upper end with said rack J and pivoted at J on a bracket J secured to the bed A. (See Figs. 8 and 9.) The lower end of said lever J is provided with a roll J which engages with a groove J 6 in the cam J on the shaft 0. (See Fig. 9.) The revolution of the cam J causes the lever J to be moved in and out, and gives a reciprocating sliding motion to the rack J The shaft J has also a partial gear J thereon, (see Figs. 1, 3, and 7,) which is in position to engage the pinions E and E on the shafts E and E of the gum-rolls E and E The gear J has one side cut away (see Fig. 7) to allow the pinions E and F. to pass over it and not engage it at certain times. During the period that the gum-roll E is in contact with the gum-box roll the rack J is moved a short distance in one direction and returned, imparting a partial rotation and reverse to the shaft J and partial gear J ,causing the gear .1 to engage the pinions E and E and rotate the gumming-rolls E and E After the movement of the partial gear J it is left in the position shown in Figs. 1 and 7, allowing the pinions E and E to pass over it. The arms E are then rocked by means of the cam E and intervening mechanism, drawing the blocks E to the left and rocking said blocks on the centers 9 through the limit of their swinging motion, and the sleeves F. are moved, carrying the gumming-rolls E and E over the lower surfaces of the pickups, to gum the same, into the position shown by dotted lines at K, Fig. 1. Gumming-rolls E and E then remain atrest while the side pick-up G is moved from the position shown in Fig. 4 and by dotted lines in Fig. 1 to the position shown by full lines in Figs. 1 and '2, and the pickups are then moved down into contact with the pile of envelope-blanks F and are then raised and the side pick-up G12 moved back to the position shown in dotted lines, Fig. 1, and full lines, Fig. 4, when the motion of the arms E is reversed and the blocks E again rocked, bringing gum-roll E into the highest position and the gummingrolls moved back into their first position with the gum-roll E in contact with the gum-box roll 0', as shownin Figs. 1 and 2.

By meansof the pair of gumming-rolls E and E andthe rocking motion given to said rolls in the manner above described said rolls are alternately used as gumming-rollsthe roll E as the gumming-rolls are moved toward the right, Fig. 1, and the roll E as said rolls are moved toward the left, Fig. 1. The gumming-roll which is not engaged in the act of gumming the under surfaces of the pick-ups acts as a doctor-roll to secure a more even distribution of the gum over the roll which is at that time in contact with the pick-up arm.

The gum-rolls E and E are moved only in one direction as each envelope-blank is gummed, both rolls taking a supply of gum from the gum-box O at the end of their movement to the right, and gumming-roll E surface of the pick-ups as the rolls are moved I toward the right.

The plates E on the sleeves E are tightened upon the washers H until the friction upon the guide-rods E is just sufficient to cause the blocks E to be rocked. Each end of the guide-rods E is, vertically adjustable, allowing said guide-rods to be brought into a position parallel with the under surfaces of the pick-ups, and also allowing the horizontal plane of the guide-rods to be raised or lowered, as desired.

The box-roll shaft 0 Fig. 3, has a continuous rotary motion through the miter-beveled gears L, shaftL', supported in bearings on the shelf D, and grooved pulley L fast on said shaft L, and belt L passing around the pul ley L on the shaft M. (See Fig. 8.)

By using two gumming-rolls instead of one, as heretofore, we effect the gumming of the pick-ups for two blanks at each complete movement of the gumming-rolls forward and back, with the use of a single gum-box.

It will be understood that the details of construction of the various parts of our improved mechanisms for envelope-machines may be varied somewhat from what is shown in the drawings and above described without departing from the principle of our invention. For example, our improved gummlng mechanism or gumming-rolls may be used on envelope-machines in which the blanks are raised by pneumatic action to gum the gummers to which the blanks are fed, as is customary in some kinds of envelope-machines. Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. In an envelope machine, the combination with a revolving gum box roll, and pickups for gumming the envelope blanks, of a pair of gumming rolls held in bearings and having a traverse motion across the gumming surfaces'of said pickups, said gumming rolls having a rocking motion whereby one of said gumming rolls is moved into contact with the pickups, as said rolls are moved in one direction, and the other of said rolls is moved into contact with the pickups as said rolls are moved in the opposite direction, substantially as set forth.

2. In an envelope machine, the combination with a rotating gum box roll, of a pair of gumming rolls having a traverse motion toward and away from said gum box roll, and said gumming rolls having a positive rotation while in contact with the gum box roll, independently of the rotation of the gum box roll, whereby the gum solution taken from the gum box roll is evenly distributed between said gumming rolls, substantially as described.

3. The combination with a gum box roll rotating partially immersed in a gum solution,

of the traverse gumming rolls E and E pinions E and E shaft J, gearJ', actuating rack J and partial gear J all arranged and operated, substantially as described.

4. In an envelope machine, the combination with the pickups for gumming the envelope blanks, of a pair of gumming rolls having a traverse motion across the gumming surfaces of the pickups, sleeves E sliding on ways, swinging blocks E pivoted to said sleeves, said blocks having bearings for the gumming rolls, and studs to which the roll actuating mechanism is attached, and roll actuating mechanism by which said rolls are moved across the gumming surfaces of the pickups, substantially as described.

5. The combination with parallel ways E sleeves capable of sliding on said ways and provided with tapering chambers, semi-elastic washers held in said tapering chambers, of gumming rolls supported by said sleeves, and plates E connected with said sleeves by tightening screws, whereby the pressure of said semi-elastic washers on said ways is increased, substantially as described.

6. The combination with pick ups, for gumming the seal and back flaps of an envelope blank, attached to a vertically reciprocating plate, of a pick up for gumming one of the side flaps of the envelope blank, said side pick up being pivoted to the vertically moving plate and adapted to have a quarter rotation in a horizontal plane, whereby said side pickup is moved into position to gum the side flap at the downward end of its motion, and into position to be gummed by the gumming roll when at the upward end of its motion, substantially as set forth.

7. The combination with the pickups for gumming an envelope blank, of arm G pickup G for gumming the side flap of the envelope blank, pivoted in the free end of the arm G shaft G coincident with the axis of the side pickup, arm G having a spline connection but held from longitudinal movement on said shaft G and connected actuating mechanism, substantially as described, whereby said shaft G is given a partial rotation for the purpose of bringing the side pickup from a position for gumming the blank, to a position to receive gum from a gumming roll, and vice versa, substantially as described.

8. The combination with the horizontal bar G carrying a pickup for gumming the back flap of the envelope blank, and an arm G of a side pickup for gumming the side flap of the envelope blank, said side pickup being pivoted in said arm G and capable of a partial rotation from a position for gumming the side flap, to one in line with the back flap pickup for the purpose of receiving gum fromthe roll used in gumming the back flap pickup, substantially as described.

9. The combination with pickups G, and G, of arm G pickup G adapted to gum the side flap of the envelope blank, and pivoted in said arm, shaft G arm G having a spline connection with said shaft and held in lugs on the rigid part of the machine, connecting rod G and bell crank lever G ,substantially as described.

10. The combination with pickups G, G, and pivoted side pickup G, of gumming rolls E and E having a traverse motion across the pickups G, G, substantially as described.

11. The combination with a rotating gum box roll, of a pair of gumming rolls having parallel axes, and having pinions by which they are rotated, and an actuating pinion having a rocking motion, and engaging said roll pinions while the gumming rolls are in contact with the gum box roll, substantially as described.

12. The combination of roll shaf s E and E rolls E and E pinions E and E located between the sections of the rolls, shaft .T, gears J and J sliding rack J having a reciprocating motion, and engaging the gear J, and the gear J engaging the roll pinions, whereby the rolls are given a rotary motion while they are in contact with the gum box roll, substantially as described.

13. The combination with the pickups G, and G, and pickup G pivoted about a vertical axis so as to be capable of making a partial rotation, of the gumming rolls E and E carried in rocking blocks E pivoted upon sleeves E having a frictional resistance upon guide rods, and said guide rods, and actuating mechanism connected with said rocking blocks, substantially as described.

14. The combination with pickups G, G, and side pickup G pivoted so as to be capable of a partial rotation in a horizontal plane, of a pair of gumming rolls having a traverse motion across the gumming surfaces of said pickups, and means for operating said rolls, substantially as set forth.

EVERETT M. LOW. WM. B. EMERSON. Witnesses:

RUFUS B. FOWLER, H. M. FOWLER.

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