US1082088A - Feeding device for presses. - Google Patents

Description

E. M. LO'GKWOOD. EEEDING DEVICE EOE EEEssEs.

1 APPLICATION FILED MAYQ, 1913. 23 3 SHBETS*SHEET l.

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EBEDING DEVICE FOR PRESSES. APPLIOATION FILED MAY'Q, 1913.

"1,082,088, Patented Dee.2s,191s.

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E. M. LOCKWOOD. FBBDING DEVICE FOR PRESSES.

APPLICATION HLBD Mns, 191s.

Patented Deo. 23, 1918.

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NTED STATES PATENT OFFICE.

EDWARD Ill. LOCKWOOD, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO C. R. CARVER COMPANY, A CORPORATION OF PENNSYLVANIA.

FEEDING DEVICE FOR PRESSES.

Losaoss.

Application led May 9, 1913.

To all whom t may concern Be it known that I, EDWARD M. LoonwooD, citizen of the United States, and resident of Philadelphia, county of Philadelphia, and State of Pennsylvania, have in vented an Improvement in Feeding Devices for Presses, of which the following is a specification.

The object of my invention is to more particularly provide an embossing press or printing machine with means for automatically feeding cards or sheets to the embossing dies or printing means, whereby accuracy of adjustment and facility of operation are secured, said means to have provision for being held out of action when necessary without stopping the operation of the press as a whole.

My invention consists of a reciprocating Vfeeding table for delivering a card or sheet into position between the embossing, printing or other operating devices of a machine, eoperating with means for reciprocating the table synchronously with the action of the dies or printing devices, and with hand controlled means for arresting the reciprocation of the table without interfering with the general operation of the machine; and further in providing the table olierat-ingl means with locking devices for automatically locking the table in position immediately prior to and during the embossing or printing operation, and unlocking it immediately after the said operation, so as to prevent movement of the table during the act of embossing or printing.

My invention also comprehends other features and details of construction which, together with those above specified, will be better understood by reference to the drawings, in which Figure 1 is a side elevation of a printing or embossing machine embodying my improvements; Fig. 2 is a front elevation of the same; Fig. 3 is a sectional elevation of the same taken on line -a; of Fig. 2; Fig. 4 is a sectional plan view of the same taken on line Q/-y of Fig. 3; Fig. 5 is an inverted sectional plan view of the same taken on line e-e of Fig. 3; and Fig. 6 is an elevation of the oscillating arm of the table actuating roek shaft.

2 is the main frame of the machine, 3 the embossing or printing die and Il the impression die and plunger. The impression plun- Specification of Letters Patent.

Patented Dec. 23, 1%13a Serial No. 766,465.

ger may be operated by a toggle 5 operated by the usual cams on shaft 6 and connections, such as shown in dotted lines, in Fig. 1. The die 3 is usually reciprocated horizontally, so as to be moved back to receive ink and have its unengraved surface cleaned, all of which is fully known and set out, for example, in Letters Patent No. 951,1181, granted to ine on March 8, 1910.

In this application I make no claim to the general construction of the embossing or printing machine, in so far as operation of the dies, inking devices and cleaning devices is concerned, such matters being already fully set out in the aforesaid Letters Patent.

I will now refer to the improvements to which my invention is especially directed.

7 is a reciprocating table, notched at oneV end, as at 7- (Figs. 3 and 5) for permitting its side portions to extend upon each side of the dies din-ing the embossing or printing operation. fIhis table may be fitted with any of the usual guide strips 7b (Fig. 1) Vto insure proper' positioning of the card or sheet to be printed. Secured to the under side of this table are a central plate 11 and two side plates 11a. Fitting between the two plates 11*L is a sliding carriage 8 having a slot 12L through which a clamping screw 12 extends, said screw being received in the plate 11 on the table (Fig. By means of this connectie-n between the table and carriage, the former may be adjusted thereon to suit the size of the dies; and also to permit of the substitution of other tables having smaller or larger notches 7, if so desired.

10 is a bracket or extension from the front portion of the main frame 2 of the machine and has side guideways 9, in which the carriage 8 is guided and in which it is reciprocated to and fromV the dies; backward, to deliver the printed or embossed card or sheet and receive a fresh card or sheet; and forward to move the sheet into position between the dies 3 and 4:.

The carriage 8 is reciprocated by the following mechanism: A rock shaft 1d is journ naled in bearings 15 and 15 and is provided with an arm 13, connected at its upper or free end with a. link 16, which is also hinged to the carriage 8 (Fig. 3). rIhe rock shaft 14: has upon its outer end a loosely journaled oscillating arm 13a, said arm being rocked by link 17, which is hinged to one end of an oscillating lever 18. This lever 18 has a. roller 19 on its upper end, which engages the cam 2O upon the cam shaft 6; and the roller is maintained in engagement with the cam by a spring 21, pulling upon the lower end of the lever 1S. By means of this mechanism, the arm 13a is synchronously oscillated with the reciprocations-of the die 4. The arm 13a, being loose on the shaft 14, must be combined with means for providing engagement between said parts, and this is accomplished by the sliding clutch 33 4). This clutch 33 is free to slide on the shaft 14 but held against rotation thereon by the feather 14a; and is provided with a pin 34, the ends of which extend beyond each end of the clutch body. lWhen in the position shown in Fig. 4, the pin 34 engages hole 36 on the bearing 15 and locks the shaft 14 against rocking and may, in this position, hold the table 7 fixedly in the position shown in Fig. 3. If the table is to be reciprocated, the clutch 33 is moved to the right, Fig. 4, and the pin 34 brought into clutching engagement with the hole 37 in the oscillating arm 13a, and then the rocking of the said arm will cause the shaft 14 to be also rocked with it, and in synchronism with the dies. To maintain the clutch in each of its positions of adjustment, l provide a screw 35 which may engage recesses in the shaft 14 to hold the clutch body against being shifted. Any other suitable means may be employed for holding the clutch in position, in lieu of that shown.

By the mechanism above described, the table 7 may be reciprocated continuously and synchronously with the operation of the dies in the normal act of embossing or printing, or it may be thrown out of action whenever desired, as for example, when adjusting the machine and making ready for a` printing or embossing operations. Thilo the table 7 may be removed, it is not desirable that the carriage 3 shall be reciprocated except when in the act of printing or embossing.

l' lhen the table is brought into the printing position 3) it is important that there shall be no possibility for vibration or lost play during the act of printing or embossing, as it would impair the results desired. To overcome such possible defect, l provide suitable locking means for locking the carriage 8 to the bracket 10 or main frame of the machine, said locking means being automatic in its operation and further preferably adapted to be thrown out of operation so far as its releasing action is concerned when the table ceases to be reciprocated. The means provided for this action are as follows: A vertically reciprocatable bolt 24 is guided in the bracket 10 and its upper end engages hole 25 in the carriage 8 when moved to its forward position (Fig. 3), so that the parts 8 and 10 are locked together. By having a close lit for the locking bolt, all lost motion may be prevented and the table held very rigidly in its printing position. This bolt 24 is reciprocated by a lever 22, secured to a rock shaft 2G which is journaled in bearings 26l The lever 22 is counterweighted at 23 so that, normally, the bolt 24 will be thrown upward to be retained in locking position when not otherwise prevented. Upon the end of the shaft. 26, an arm 27 is journaled and may be oscillated without rocking the shaft 26. Sleeved on the rock shaft 26 is a sliding clutch 32, said clutch being held against independent rotation on the shaft by a feather or spline 32 and being so shaped as to engage the tooth 27 on the hub of the arm 27. This clutch 32 is also made with an annular groove 32b in which is received an arc shaped figure 335', extending from the clutch 33, before described. ln this way, the clutch 32 is shifted with clutch 33, and hence the oscillating arms 27 and 13a of the respective rock shafts 2G and 14 are simultaneously connected and disconnected with said shafts, so that the lock 24 is always operated when the table is being reciprocated.

In the particular form of the means shown, the clutch 32 will be disengaged with its arm 27 exactly at the time when the disengagement of clutch 33 with arm 13l takes place; and as this can only take place when the pin 34 can enter the hole 36 in bracket 15, the weight 23 will come into play to shoot the bolt 24 into locking position only when the carriage 8 is moved to its forward or printing position (Fig. The locking bolt may therefore be operated synchronously with the reciprocations of the table by mechanical means, or may automatically move itself into locking position whenever the table is thrown out of action. The position of the hole 3G will prevent disengagement of the table except at its forward position; but this is not essential as the table, after disengagement from the operative means, may be moved to the forward position by hand.

The arm 27 may be oscillated synchronously with the dies or other parts of the press, and this may be done in any suitable manner. I have, however, shown means for accomplishing this result, which I have found satisfactory. It consists of a reciprocating bar 28 hinged at one end to the arm 27 and having the other end slotted and guided on the usual rock shaft 31 of the main machine. The bar 28 is provided with a roller 30 which engages a cam groove in a cam 29 secured to the rock shaft 31 and rocking with it. By this means the arm 27 and its shaft 2G is rocked at the proper time to move the locking bolt 24 into locking and unlocking position. Any other suit-able means may be employed in place of said means shown.

have shown my improvements as applied to an embossing and printing machine, but they may be employed on any character of machine where the work is required to be moved into definite relation with dies or operating means of any kind; and 'l have also shown the details in the form which have found well suited for the purposes of my invention in commercial practice, and while I prefer said construction, I do not restrict myself to the details, as these may be modified without departing from the spirit of the invention defined in the claims.

Having now described my invention, what l claim as new and desire to secure by Letters Patent, is

l. In a machine of the character described, dies and means for moving the dies relatively to or from' each other, combined with a reciprocating` table movable to and from the dies for feeding a sheet thereto, a rock shaft and connecting means with the table for reciprocating it, power devices for rocking the rocl shaft synchronously with the movement of the dies relatively to or from each other, and a clutch device connected with the roel; shaft and adapted to engage' either a stationary part of the machine to hold the rock shaft against motion or to engage the power devices for operating the rock shaft.

2. In aV machine of the character described, dies and means for moving the dies relatively to or from each other, combined with a reciprocating table movable to and from the dies for feeding a sheet thereto, a locking device for locking the table when in position nearest the dies, operative mechanism to actuate the locking device alternately into and out of locking position, a rock shaft and connecting means with the table for reciprocating it, power devices for rocking the rock shaft synchronously with the movement of the dies relatively to or from each other, and a clutch device connected with the rock shaft and adapted to engage either a stationary part of the machine to hold the rock shaft against motion or to engage the power devices for operating the rock shaft.

3. ln a machine of the character cescribed, dies and means for moving the dies relatively to or from each other combined with a reciprocating table movable to and from the dies for feeding a sheet thereto, a locking device for locking the table when in position nearest the dies, operative mechanism to actuate the locking device alternately into and out of locking position, a rock shaft and connecting means with the table for reciprocating it, power devices for rocking the rock shaft synchronously with the movement of the dies relatively to or from each other, a clutch device connected with the rock shaft and adapted to engage either a stationary part of the machine to hold the rock shaft againstI motion or to engage the power devices for operating the rock shaft, and means for disconnecting the operative mechanism from the locking device simultaneously with the disconnecting of the power devices with the rock shaft.

if. In a machine of the character described, dies and means for moving the dies relatively to or from each other, combined with a reciprocating table movable to and from the dies for feeding a sheetthereto, a locking device for locking the table when in position nearest the dies, operative mechanismV to actuate the locking device alternately into and out of locking position, a rock shaft and connecting means with the table for reci arocating it, power devices lfor rocking the roch shaftV synchronously with the movement of the dies relatively to or from each other, a clutch device connected with the roch shaft and adapted to engage either a stationary part of the machine to hold the rock shaft against motion or to engage the power devices for operating the rock shaft, means for disconnecting the operative mechanism from the locking device simultaneously with the disconnecting of the power devices with the rock shaft, and automatic means for retaining the locking device in locking position when disconnected from the operative mechanism.

5. In a machine of the character described, dies and operating means for mov'- ing the dies relatively to and from each other, combined with a reciprocating table movable to and from the dies, a carriage supporting the table guides for the carriage secured on the machine, a rock shaft, connections between the rock shaft and the carriage for reciprocating it and the table, an oscillating arm journaled upon the end of the rock shaft, power devices for continuously oscillating the arm synchronously with the operation of the dies, and a clutch device consisting of a body sliding upon the rock shaft and rocking therewith and having oppositely directed engaging parts for alternately engaging the oscillating arm and the frame of the machine whereby the rock shaft may be put into motion by connection with the oscillating arm or may be held against motion by connection with the frame of the machine.

6. In a machine of the character described, dies and operating means for moving the dies relatively to and from each other, combined with a reciprocating table movable to and from the dies, a carriage supporting the table, guides for the carriage secured on the machine, a roel: shaft, connections between the rock shaft and the carriage for reciprocating it and the table, an

oscillating arm journaled upon the end of the roel; shaft, power devices for continuously oscillating the arm synchronously with the operation of the dies consisting of a pivoted lever, a link between one end of the lever and the oscillating arm, a spring to move the lever in one direction and a cam to move the lever in the other direction, a clutchdevice consisting of a body sliding upon the rock shaft and rocking therewith and having oppositely directed engaging parts for alternately engaging the oscillating arm and the frame of the machine, and hand operated means for holding the body part of the clutch in its different positions of adjustment on the rocl; shaft, whereby the rock shaft may be put into motion by connection with the oscillating arm or may be held against motion by connection with theframe of the machine.

7. In a machine of the character de scribed, dies therefor and power devices for moving said dies relatively to and from each other, combined with a reciprocating` table, power devices for reciprocating the table synchronously with the operation of the dies, hand operated means for throwing the table out of action, locking means for locking the table in its position nearest the dies, a rock shaft for operating the locking device, power devices for rocking the rock shaft, a clutch for connecting and disconnecting the rock shaft and power devices, and a connection between the hand operated means for throwing the table out of action and the clutch devices of the rock shaft, whereby the rock shaft is thrown out of action simultaneously with throwing the reciprocating table out of action.

8. In a machine of the character described, dies therefor and power devices for moving said dies relatively to and from each other, combined with a reciprocating table, power devices for reciprocating' the table synchronously with the operation of the dies, hand operated means for throwing the table out of act-ion, locking means for locking the table in its position nearest the dies, a rock shaft for operating the locking device, power devices for rocking the rock shaft, a clutch for connecting and disconnecting the rock shaft and power devices, a connection between the hand operated means for throwing the table out or' action and the clutch devices of the rock shaft, whereby the roel; shaft is thrown out of action simultaneously with throwing the reciprocating table out of action, and autonatic means for throwing the locking device into locking engagement to hold the table against movement when the rock shaft is disengaged from its power devices.

9. In a machine of the character described, the combination of guides on the machine for the carriage, a reciprocating carriage movable on the guides and having lateral guiding edges and a central slot having its length arranged in the direction of reciprocation, and a table resting upon the carriage and having a middle plate 1 1 and side guide plates lla fit-tingthe lateral guide edges of the carriage to permit adjustment of the table longitudinally on the carriage, and a clamping screw extending through the slot of the carriage and engaging both the edges of the slot and the middle plate ll of the table and arranged for clamping the table down upon the carriage in different longitudinal positions of adjustment, and means for reciprocating the carriage.

In testimony of which invention, l hereunto set my hand.

EDVARD M. LGCKVOGD. lVitnesses:

R. M. KELLY, R. M. HUNTER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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