US1471722A

US1471722A - Machine for applying adhesive medium to envelopes, wrappers, and the like

Info

Publication number: US1471722A
Application number: US414569A
Authority: US
Inventors: Brooks Herbert Charles
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-10-04
Filing date: 1920-10-04
Publication date: 1923-10-23
Anticipated expiration: 1940-10-23

Description

Oct. 23 1923.

H. C. BROOKS MACHINE FOR APPLYING ADHESIVE MEDIUM T0 ENVELOPES, WRAPPERS, AND THE LIKE Original Filed Oct. 4. 1920 5 Sheets-Sheet 1 H. C. BROOKS MACHINE FOR APPLYING ADHESIVE MEDIUM '10 ENVELOPES, WRAPPERS, AND THE LIKE OcL 23, 1923. 1,471,722

7 H. C. BROOKS MACHINE FOR APPLYING ADHESIVE MEDIUM TO ENVELOPES, WRAPPERS, AND THE LIKE Original Filed Oct. 4. 1920 5 Sheets-Sheet 5 Oct. 23 1923.

H. c. BROOKS MACHINE FOR APPLYING ADHESIVE MEDIUM T0 ENVELOPES, WRAPPERS, AND THE LIKE Original Fil'ed Oct. 1920 5 Sheets-Sheet 4 El-Pf Get. 23 1923. 1,471,722

H. c. BROOKS MACHINE FOR APPLYING ADHESIVE MEDIUM TO ENVELOPES, WRAPPERS, AND THE LIKE Original Filed Oct. 4, "1920 5 Sheets-Sheet 5 Patented Oct. 23, 1923.

lA'ZiJZ- HERBERT CHARLES BROOKS, OF CLAPI-IAM, *LOBIBCiTQENGiL-AND, ASSIGNOR OF ONE HALF TO HAROLD OF HZGEEIEEELD, SURREY, ENGLAED.

MACHINE roe. ArPLYrnc. n iiEslvniinnin a rc n rvnnornsjwnnrrnns, Ann THE a LIKE.

Application filed october 4, 1320, eeln no. 41 4 5 39. Renewed February e, 1923.

Britain and Ireland, residing at Glaphani,

5 London, England, have invented Improve:

ments in Machines for Applying Adhesive Medium to Finvelopes, W rappers, and the like, of which the following is a specification.

This invention relates to machines of the kind in which the individual blanksfof a pile of enevelope blanks or the like, destined to be 'gumined by a shaped glimmer, are successively dislodged by suction ,devices and delivered to aconveyor.

Heretofore arrangements of this kind have necessitated complete removal of one blank from the pile, however arranged, beiore the suction device can act to engage and dislodge another blank. so that the processis relatively slow. i

The object of the-present invention which has a correspondingly wide application is to ejnable operations to proceed at greater speed and with a minimum of attention, to which. end it is arranged that thesuction device or devices shall rotate adjacent to the end of the pile of blanks to be dealt with, in a mannersuch -that the individual lanks a fi urg d 11w d est eopps to that in which they are ultimatelylto be conveyed, with the result, that each blank is appreciably buckled; whilst held; at the summ an -thu pr mp y broug t i t c i h th gr p iesfm n fq r menas me, wh ns-unne s a i u'n l on .b ankii en ely ar of then-" .b er the nextblank can be dislodged.

A further feature of the invention con sists is supporting the of blanks upon a table adapted to rise under. the action of means controlled electro-magnetically through a switch in accordance with the diminishing heightoi the pile, The sucti ni v c als d ine' the i d vidual blanks of the pile are carriedby a um re lvin ab u a s a nary h l w ported shaft, the interiorof which-is being continuously exhausted, the suction devices being thus rendered operative duringa portioiioi a revolution of the drum.

But in orderthat the invention .may be more readily understood it will now befur: ther described with reference tofone conv CnARLns' Bnoons, a subject. of the King of Great structional example illustrated. in the accompanying drawings, whereof Figs. 1 and 2 areelevations at rightangles to one'another of the machine complete. Fig. '3 is a plan view of the same with parts removed. Flg. 'is an elevation of parts of the machine to the ,le'ft of the line 44 F 1. Fig. 4? is a perspectiveview of part of Fig.

4:. Figs. 5 and v6 are respectively a sec table being partially counterbalanced by n weights 0 at the end of flexible connections d passing over sheaves c. The table: a carries the pileofblanks f and is caused to rise in accordance with the diminishing size oi'lj'the pilebyany suitable means controlled electromagnetically through a'switch, one member .wvliereoi rests upon the top of the pile which is thus maintained. at substantially one predetermined level; In the' example such table ra1sing means-comprlses'a ram g, the cylinder it whereofis adapted to'be V supplied with water from anyconvenient source, here assumed to be derived frpmjan' ordinary service main, through a pipe 71 provided with a valvej and shown as exemllns'ii e k wh e we rl s in communication with a pipe m for ad mission to the cylinder it, such cock in another position serving to place thefpipe m incommunication with a discharge p pe a whenjit is desired to exhaust the cylinder and allowthe table a to descend. The stem 0 of the valve y'which has only a minuate movement, is pivotally connected to a lever pprovided with an armature rand with a counter-balancing weight 3, the said armature being associated with an, electromagnet t shown diagrammatically in Figs. 5" and 6 as in circuit with a battery it one pole whereof is connected ,to a resilient blade o.

carried by an insulator w 5) from a cross stay 0a of the machine. -lhis blade,

which bears upon the top or" the pile of blanks, carriesfa contact iy adapted to enag som Pa th m hine i th case a drum 2, when the top of the pile is at the predetermined level required so that the circuit of the electroinagnet t is complete to earth, at which time theelect-ro magnet is energized and acts to close the valve j thereby arresting ascent of the table (6. Removal of a blank from the pile however causes the contact y to open the circuit,

' stateckforms no part per se of the present invention is shown at 2, being carried by a triangular frame ,3 pivoted at 4 within adjustable bracket bearings 5 mounted upon the stationary longitudinal members 6to which the cross stay 00 is secured. The pressure which the gummer 2 may exert upon the pile of blanks is capable of being adjusted by the counterbalancing weight 7 The blank-withdrawing device comprises a suction mouth arrangement exemplified, as will be clear from Figs. 3 and 4, by two pairs otnozzles 8 one pair being disposed longitudinally of the: drum 2 before referred to.

and diametrically opposite the other pair. Each nozzle 8, as shown'in Fig. 5, is fitted with a sleeve 9, retractableto a slight degree against the action of a spring '10 and carrying a rubber or other resilient mouth piece 11. The drum 2 is mounted to rotate upon a hollow shaft 12 closed at the ends and held, without possibility of rotating, by arms 13 upon the cross stay as the interior of the said shaft 12 being exhausted of air by any suitable meansconnected to the pipe 1 1. The shaft 12 is provided with ports one of which is shown at 15 so located that as a nozzleS reaches a position where the mouth piece-11 can engage a paper blank, it is in communication with the hollow shaftso that air is exhausted therefrom and the blank sucked up. Continued rotation of the drum 2 moves the suction nozzles clear of the said exhausting ports 15 so that the raised blank is released. The release of the blank is timed to occur at or near the instant when and sprocket gear 23 with a main driven shaft 2a. The drum 2 is driven by chain and sprocket gear 25 from the shaft 22 which latter carries 'aroller 26 similar to rollers 27 on

other shafts

28, 29 around which

travel bands

30, 31 adapted to deliver a blank ultimately on to belts 32. The undersides of the bands 16 travel in the same direction asthe upper sides of the bands 30 which they overhang and in order therefore that a blank after being gummed can be readily transferred from the pile to thebands30, 31 it is non-revoluble shaft 35 fitted with a cam 36 I of the shape shown in Fig. 7. Each cheek member 33, which bears against the corresponding belt 16, is slotted at 37 to receive a sliding arm 38 each arm having a pin 39 projecting laterally through a slot 40 and connected to one end ofa corresponding spring 41. anchored at 42 to the cheek member The arrangement is such that as long'as either pin 39 bears, upon the edge of the cam which is concentric with the aXis of the spindle 3 1. the spring 41 connected thereto will be elongated as shownat the upper part of Fig. 7. and the arm 38 with drawn. Assoon however as the cheek member 83 has rotated sufliciently iarto cause the slot 40 to lie more or less parallel to the flattened edge 13 ot the cam the pin 39 will be free to travel along the slot, the spring consequently quickly shooting the arm 38 out beyondthe periphery of the member 33 as shown at the lower part of Fig. 7. When the pin 39 upon further rotation of the mem ber 33 engages the edge 44 of the cam it will lag in the slot 40 until the-opposite end of such slot is reached at which time it will have completely extendedthespring 41 and moved to the concentric edge of the cam, which as previously explained, will maintain the arm 38 retracted. By appropriate angular adjustment of the cam 36 it will be obvious that the projection of the arms 38 can be made to occur at a position best suited to deal with the blanks. Here it will be con venient' to explain with the aid of Fig. 9 the operation of removing the blanks. \Vhen the drum .2 occupies the position (a) the uppermost blank which at the other end is being held by the gumming device 2 will notwithstanding a very slight angular movement of the nozzles 8, have become appreciably buckled, somewhat as shown. This buckling rapidly increases and becomes more localized towards the nozzles 8 as positions (7)) and (a) are reached. The release of the blank from the nozzles Stakes place about position (0) at which time the arms 38 of the cheek member 33 will be found projecting to direct the blank into contact with the bands .lfiwhich as alreadystated will thereafter clamp the blank upon the cheeks andrapidly convey it to the

bands

30, 31.

To facilitate dealing with blanks of differ ent shapes the hollow shafts 35 whereinthe spindles 34: of the check members 33 revolve,

are mounted in bearings 45 adjustable along the frame members 6, the spindle 34 being driven from the shaft 22 by chain and sprocket gearing 46 comprising a twin idler 47 mounted upon the pivot 4:8 of a collapsible link holder 49 whereby the drive is maintainable without altering the length of chain or otherwise interfering with the gear.

vThe part of the table a upon which the pile f ofblanks: is directly received may be gummer as described, the gummer may be associated with a stationary table beneath the pile of blanks which descends as a whole, the gum being applied to the underside of the lowermost blank which is displaced by the suction device in a manner analogous to that described.

What I claim is 1. The herein described method of applying an adhesive to a pile of paper blanks by means of a shaped gummer which consists in urging the said pile of blanks against the shaped gummer so that they are held thereby,

by the gummer to a buckling action in a direction opposite to thatin which it is to'be 40/ I providing for thelateral withdrawal from] said gummer of a blank in contact there with and subjecting saidblank whilst held withdrawn in such wise that the blank is thereby directly brought into contact withthe withdrawing means, the successively gummed blanks over-lapping and being separated only sufiiciently to prevent one being fouled by the gum upon another, as set forth.

2. A machine of the kind described, com

prising a relatively fixed but yieldingly mounted shaped'gummer, means for urging a pile of blanks into contact with said gum:

mer so that the outermost blank of thepile is held thereby, continuously operatingvgripping means contiguous to edges of the blanks to opposite sides of the gummer and adapted to withdraw a blank in one direction away from the gummer and means 'opcrating in the space between said gripping means for urging the blank that is being held by the gummer in a direction opposite to that in w ich the gripping means subsequently effect withdrawal and adapted to so buckle the said blank that itis brought directly thereby into contact with the gripping means, substantially as described,

Signed at London, England, this 15th day of September, 1920. i

HER-BERT CHARLES BROOKS.