US1286873A

US1286873A - Box-staying machine and the like.

Info

Publication number: US1286873A
Application number: US18812117A
Authority: US
Inventors: Henry De Smith
Original assignee: MD Knowlton Co
Current assignee: MD Knowlton Co
Priority date: 1917-08-25
Filing date: 1917-08-25
Publication date: 1918-12-03
Anticipated expiration: 1935-12-03

Description

HfDE SMITH.

BOX STAYING MACHINE AND THE LIKE.

APPLICATION FILED Aue.2s. 19w.

Patented Dec. 3, 1918.

3 SHEETS-SHEET 1.

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H. DE SMITH.

BOX STAYING MACHINE AND THE LIKE.

Patented Dec.

3 SHEETS-SH J Q EEEEE. KL-Ew APPLICATION FILED AUG.25. 19!?- H. DE SMITH.

BOX STAYING MACHINE AND THE LIKE.

APPLICATION FILED AUG.25. I917.

Patented Dec. 3, 1918.

3 SHEETS-SHEET 3.

1 INVENTOR ,4 TTORIVEY UNITED STATES PATENT oEEioE.

HENRY DE SMITH, OF ROCHESTER, NEW YORK, ASSIGNOR TO M. D. KNOWETON COM- PANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK. v

BOX-STAYING MACHINE AND THE LIKE.

Specification of Letters Patent.

Patented Dec. 3, 1918.

Application filed August 25, 1917. Serial No. 188,121.

. To all whom it may concern:

Be it known that I, HENRY DE SMITH, a citizen of the United States, and resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Box-Staying Machines and the like, of which the following is a specification.

This invention relates to improvements in that class ofbox staying machines and the like, in which is employed a so-called safety device adapted to transmit power from the actuating means to the stay-applying presser die only when the latter is in close proximity to the work being operated upon. At all other times the presser die will yield if it meets with an obstruction, such as the operators hand, and therefore no harm will be done. Such a safety device in the form here shown, and which is substantially the same as that disclosed in the pending application of E. M. Hawkins, Serial No. 862,480, comprises two normally finoperative power-transmitting elements one of which is associated with the actuating means of the machine and the other with-the presser die, and controlling means automatically operative in the event of'there be- I ing no obstruction in the path 'of the presser die to establish a positive working connection between said power transmitting elements just prior to the engagement of the work by the presser die. The'presser die 'during the ,main part of its working stroke and preliminary to the establishmentoof an operative connection between the power transmitting elements, descends under the action of gravity only.

In box staying machines, as well known in the art. a cutting device is employed for cutting the strip ofstaying material fed to the machine, into stays of desired length for application to the boxes to he stayed. This cutting device usually comprises a stationary cutter and a cooperating movablecutter, which latter is usually mounted on the reciprocating'slide which carries the presser die, to be operated thereby. The arrangement of the cutter in relation to the station'- ary die or anvil on which the boxes are supported, is such that the cutting of the stay is effected prior to the pressing of the same on'the box corner by the presser die, and

p in those machines provided with a safety line 2-2 of Fig. 1;

line 33 of Fig. 1;

operating device as hereinbefore referred to, the cutting of the stay takes place prior to the establishment of a working connection between the power transmitting elements. Therefore, it will be understood that in such case, the cutter, if dependent for operation upon its connection with the sliding head for .the presser die. will be operated only by the ,weight of said head and connected parts, and

in some instances it has been found that such we1ght has not been sufficient to overcome the reslstance offered by the stay, in which event the cutter and associated presser are stopped in their downward movement. This of course prevents the establishment .of a working connection between the power transmitting elements and renders the machine inoperative. Therefore, it has "been thev object of the present invention to promal operation of both the cutter and presser,

or similar work-performing elements, .ina

machine having a safety operating'deviceof the character referred to for the presser die. This object is attained by the novel construction, .arrangement and combinations of parts as illustrated in the accompanying drawings, in which Figure 1 is a side elevation of the front end of a box-staying machine, with the frame partly broken away for the clearer illustration of the safety device and associted parts;

-Fig. 2 is a vertical section taken on the Fig. 3 is a vertical section takenfon the vide means for assuring the proper, and norshown comprises a stationary die oranvil A for the support of the boxes tobelstayed, and-a movable die B for pressing the stay strips to the box on saidanvil. The die B is carried bya reciprocatory slide Gpro aid d .W fli. w dly P e i 91 This pin is connected to and driven by the actuating shaft E, which, in the present instance, is provided with a crank pin F.

The crank pinF is connected with the pin D by a link device which is constructed'in the manner hereinafter described, toconstitute the safety device hereinbefore referred to. v

This safety link device comprises two power transmitting elements, one-of which is indicated at 1 and is journaled on the crank pin F, and the other is indicated at 2 and is journaled on the pin D. A bushing together,

3 may be interposed between the pin F and the part 1 and a similar bushing 1 interposed between the pin D and part 2. The depending power transmitting element 1 has a bifurcated lower extremity forming an elongated opening 5, in which the pin D engages v The depending power transmitting element "1 is provided with a shoulder 9, which is adapted to engage with a corresponding shoulder 10 formed on the power transmitting element 2. The parts are normally held in the position shown in Fig. 2, in which the shoulders 9 and 10 are in engaging relation, by means of a spring 11, having one or more convolutions wound around the hub of part," 2, and having oneof its extremities secured to the part1 and the other extremity 'securedto the part 2, so that the part 2 will normally be held in the position shown in Fig.2. A suitable stop 12 may be provided for limiting the movement of the part 2.

I An ex'tensionof the pin F is formed into a' cam" 13, and "is so shaped that just after the movable die A leavesthe work on the up stroke of'the safety link, the part 2 will be shifted to the position shown by dotted lines in Figs. 2 and 3, in which the shoulders 9 and 10 are out. of engaging relation. The cam 13 holds the part 2 in this position dur ing the up and down stroke of the link until the movable die-A, or work-performing element, is about gof an inch from the work to be operated upon. At this time, the cam assumes the position shown by full lines in Fig. 2, and permits the spring 11 to shift the 'part 2 to the position shown in Fig. 2. The

shoulders?) and 10 are then in engaging relation, and pressure is transmitted from the crank pin through the parts land 2 to the'pin D, the same as if a solid link were provided between'the pins F and D.

. If the work'-p'erforming element, which,

in the present instance, is the movable die 13,-, encountersiany obstacle" during its downward-movement, such as the "operators hand,

'the parts 1 and 2 will yield or move relative to each other, since the pin D and part 2 will be held stationary by the obstacle, and as the shoulders 9 and 10 are not in engaging relation, the part 1' and crankpin F will continue their downward movement without applying any pressure to the work-performing element. The

openings

7 and 5 permit this relative movement between the parts 1 and 2, and allow the part 1 to make its downward stroke without affecting the part 2 which is being held stationary by the obstacle under the works-performing element. When an obstacle is so met with, and the parts move relative to each other, as just described, the upper extremity of the part 2 will be thrown to one side of the cam 13, and

the cam in descending will move downward relative to the upper end of the part 2, in an obvious manner.

' Obviously, any obstruction over %'of an At the rear of the presser die B is located the cutting device for-severing the strip of staymaterial into stays of the desired length for application to the corners of the boxes supported on the anvilA. This cutting device as here shown comprises a stationary cutter 15 and a cooperating movable cutter 16. The stationary cutter 15 is carried by a. bracket 17 attached to the'supporting frame and is formed withan opening 18 through which the" stay strip is'fed to its position over the box corners. The movable cutter 16, in accordance with the presentinvention, is operatively connected with the power transmitting element 1 to be positively actuated thereby independently of the presser die 'B'and its carrying slide. Any suitable means may be employed for effecting the connection of the cutter with the element 1'. iAs' here shown, a rod 19 extends through an opening in a boss or projection 20con a plate 21 attached. to the element 1, and at its upper end is provided with an adjustable shoulder, in the form of a nut 22, for engagement with a washer 23 on the upper end of the'boss 20, and at its lower end is formed with a hook 24 which ,eng'agesthe cutter plate 16 within a slot 25 therein (see Figs. 3 and 4). With this connection, the cutter is raised by the element I on its up stroke, and is caused'to descend by said element on its down stroke by means of a spring 26 interposed between a shoulder 27 on the rod 19 and the under side of the boss20.

In order to permit of the oscillation'of the element 1 without afiecting the lateral' position of the rod 19, which, together with the connecting cutter 16, moves in a vertical straight line path, the opening 28 in the boss 20 through which said rod passes is made of substantially greater width than the. diameter of the rod, as shown. The cutter 16and connected rod 19 are guided in their up and down movements by means of a pair of guide plates 30 on .the'bracket 17 engaging with the opposite sides of the cutter. A

By referring to Fig. 1, it will be observedthat there is a substantial clearance space between the rear end of the slide head which carries the movable die'B and the adjacent side of the cutter 16. Because of this, which would permit of the lower hook end of the rod 19 backing out of the slot in the cutter and striking against the top of the die B on the down stroke of the cutter, a plate 31 has been attached to the rear end of the slide head, as by means of fastening screws 32, which plate is of such width as to substantially fill the clearance space and closely hold the hook end of the rod 19 to its proper connection with the cutter.

The arrangement and organization of the several parts shown and described are such that upon the down stroke of the cutter 16 and presser die B, the cutter will first cooperate with the stationary knife or cutter 15 to sever the stay strip and then come to a stop by reason of the engagement of its lower ends with a pair of stationary stop surfaces 33. 33. such operation of the cutter being positively effected by the action of the power transmitting element 1. At this time in the operation of the parts, the power transmitting elements 1 and 2 are in the position shown by dotted lines in Figs. 2 and 3, 2'. 0., in inoperative or collapsible relation, but with the element 2 just about to be released by the cam13 to be shifted laterallv to o erative relation with the element 1. 'When this has taken place, pressure will then be positively transmitted from the crank F to the presser, die B during the continued down stroke of the latter, in the manner hereinbefore referred to.

After the cutter 16 has come to a stop against the stop surfaces 33, the spring 26 merely compresses and allows the element 1 to be carried by the crank F around itslower center in effecting the continued down stroke of the presser die B, as will be clear by reference to Fig. 3.

It will be understood from the foregoing that the utilization of the safety link device for positively operating the cutter, does not in any way affect the safety feature of operators fingers, over a of an inch or thereabout in thickness, and the cutter being located beyond the inner end of the die Is not in a position to engage with and injure the operators fingers in the event of their being accidentally located on the anvil in the pat of the descending die.

, What I claim is 1. In a machine of the kind described and in combination, actuating means, a workperforming element, two normally inoperative power transmitting elements one being associated with the actuating means and the other with the work-performin element, means normally operable just prior to the engagement of the work by said work-performing element to establish a positive connection between the two power transmitting elements, and a second work-performing element adapted to act on the work in advance ofthe first-named one and prior to the establishment of said positive connection between the power transmitting elements and having connection with that power transmitting element associated with the actuating means to be operated thereby.

2. In a stay-applying machine and in combination, actuating means, a stay-applying presser, two normally inoperative power transmitting elements one being associated with the actuating means and the other with said presser, means normally operable just prior to the engagement of the work by said presser to establish a positive connection between the two power transmitting elements, and a stay-strip cutter adapted to act in advance of the presser and prior to the establishment of said positive connection between the power transmitting elements and having connection with that power transmitting element associated with the actuating means to be operated thereby.

3. In a stay-applying machine and in combination, actuating means, a stay-applying presser, two normally inoperative power transmitting elements one being associated with the actuating means and the other with said presser, means normally operable just prior to the engagement of the work by said presser toestablish a positive connection between the two power transmitting elements, and a stay-strip cutter adapted to act in advance of the presser and prior to the establishment of said positive connection between the power transmitting elements and having a yielding connection with that power transmitting element associated with the actuating means to be operated thereby.

4. In a stay-applying machine and in combination, actuating means, a stay-applying presser, two normally inoperative power transmitting elements one being associated with the actuating means and the other with said presser, means normally operable just prior to the engagement of the work by said presser to establish a-positive connection betweenthe' two power transmitting elements, a stay-strip cutter adapted to act in'advance 'ofthe presser and prior to the establishment of said positive connection between the power transmitting elements and having a loose connection with that power transmitting element associated with the actuating meansto be operated thereby, and guiding means for the cutter.

5. In a stay-applying machine and in combination, actuating means, a stay-applying presser, two normally inoperative power transmitting elements one being associated with the actuating means and the'other with the presser, said power. transmitting elements being provided with shoulders adapted to engage to transmit power from the sesame transmitting elements just before the'presser 'rea'chesthe work to cause said shoulders to engage and thereby establish a positive connection between the two, and a:stay-strip cutter adapted to'act inadvance of the Presser and priorvto the establishment of said positive connection between thevpower tion with that power transmitting element associated with the actuating means to be operated thereby'independent of the presser.

Signed at Rochesteiyin the county of Monroe and State'of N ewYork, this 4th day of August, A. D. 1917; p I g {HENR DE SMITH.

Witnesses: I

Tnos. D. PATTON; HUBERT J. MARTIN;

Copiescfthis Patent may be obtained for five cents ea'ch, byvad dressi t (commissioner of Patents. y Washingt t g g transmitting elements and having connec-