US1174610A - Line-clamping mechanism for type-bar-making machines. - Google Patents

Description

APPLICATION FILED AUG-5,1914.

Patented Mar. 7, 1916.

3 SHEETS-SHEET I.

D. PETRl-PALMEDO & E. F. GODDARD.

LINE CLA-MPING MECHANISM FOR TYPE BAR MAKING MACHINES.

APPLICATION FILED AUG-5,1914.

1,174,610 Patented Mar. 7,1916.

3 SHEETSSHEET 2.

IJIVII PETRI-PALMEDO & E. F. GODDARD. LINE CLAMPING MECHANISM FOR TYPE BAR MAKING MACHINES.

APPLICATION FILED AUG. 5, I914.

l 1 74,6 1 O. Patented Mar. 7, 1916.

3 SHEETS-SHEET 3- ZiiIIIIIIIIIIIIIIIIIIIIIIIIIII W @W OM o an DAVID PETRI-PALMED-O, OF BR-IDG'EPORT, AND EDWARD F. GODDARD, OF STRA'IFORD, CONNECTICUT, ASSIGNOR-S TO ELECTRIC COMPOSITOR COMPANY, OF NEW YORK,

N. Y., A CORPORATION OF'NEW JERSEY.

Specification of Letters Patent.

Patented Mar. "7, 1916.

Application filed August 5, 1914. Serial No. 855,259.

To all whom it may concern:

Be it known that we, DAVID PETRI-PAL- MEDO and EDWARD F. GODDARD, citizens of the United States, and residents, respectively, of Bridgeport, in the county of Fairfield and State of Connecticut, and Stratford, in the county of Fairfield and State of Connecticut, have invented a certain new and useful Improvement in Line-Clamping Mechanism for Type-Bar-Making Machlnes, of which the following is a full, clear, and exact description. i

This invention relates to that class of type bar making machines in which the type bars are cast from justified lines of matrices containing expanding wedge spaces (or space bands, as they are commonly called) by means of which the justification of said matrix lines is effected.

The object of the invention is to provide eflicient means for clamping lines of matrices and space bands while they are being justified, alined and cast from,-and to do this irrespective of the required length of full lines, and whether said lines are full or short.

The invention consists in the construction and combination of parts shown in the accompanying drawing, and hereinafter described and pointed out definitely in the appended claims.

In the drawing, Figure 1 is a front ele vation partly sectioned of so much of a type bar making machine as involves the present invention. Fig. 2 is a side elevation partly sectioned of the mechanism shown in Fig. 1. Fig. 3 is a side elevation of those parts of the cam and lever as are not shown in Fig. 2. Fig. 4 is a plan view partly sectioned of the line clamping mechanism, and Fig. 5 is an elevation from the left side of Fig. 1, but showing only some of the parts which are shown in said figure.

Referring to the parts by reference char-- acters, 561 represents the fixed end clamp,

- that is to say, it is a fixed abutment against which the left end of the matrix line M impinges when the line is in that horizontal plane in which it is justified, alined and cast from. i

1 represents the movable end clamp. This is a sliding bar whose rear face is in the same plane as the rear face of the matrix line. It is movable away from, and toward and against the right end of the matrix line, whether that line be a short line or a full line. It not only serves to clamp the matrix line between itself and the fixed clamping member 561, but it also engages with the face of the mold and closes so much of the mold slot as is not covered by the matrix line.

It will be understood that the assembled but unjustified and unalined matrix line M containing expanding wedge spacers S, supported by an elevator, is lowered into position between the fixed and movable end clamps. No attempt has been made to show this elevatoror the means for operating it,

because this is familiar construction in a great variety of specific forms; and the present invention is not at all concerned with the means by which the line is so introduced between these clamps or supported while it occupies this position.

The movable right end clamp 1 is mounted in apart of the fixed framework 2 of the machine. Just in front of this end clamp is the line stop slide 560, mounted also in the mainframe and movable in a path parallel to the end clamp 1. For the description immediately following, the line stop slide is to be considered, however, stationary, with reference to the main frame. Intermediate between the end clamp 1 and the line stop slide 560 is mounted on the latter, slidable relatively to, and parallel with it, the line stop adjusting slide 545. This slide is adjustable with reference to the line stop slide from without but is rigidly locked to it in the desired relative position when the machine is in use. The adjusting and locking means will be described below. The shoulder 545 on'the line stop adjusting slide 545, to be called hereafter the line stop, projects forward into a horizontal groove 1 in the rear face of the end clamp, which groove extends from the right end of said end clamp, but not as far as the left end thereof, whereby the end of said groove forms a shoulder 1 adapted to engage the line stop 545 and thereby to limit the movement of the end clamp to the right. On the lower edge of the end clamp 1 are rack teeth 1 which are engaged by the gear 5 fixed to a sleeve 5, which is rotatably mounted on a fixed stud 4. A pinion 5 on this sleeve is engaged by a segment 7 which is rockingly mounted on a. fixed stud 9. This segment has an arm 7 which is connected through mechanism to be described with the bell crank lever 31 whose nearly vertical arm carries a roller 31 which projects into a cam groove 570 in the right face of the cam 570. This cam is fixed to the cam shaft 8, and therefore when the cam shaft is turned, this lever is positively rocked in both directions. This cam shaft has fixed to it also two other cams 18 and 96, the purpose of which will be presently explained.

The connection between the segment arm 7 and the long horizontal arm of the lever 31 is such as that by rocking said lever force can be applied to the segment '7 through a light spring 23 to rock the segment in either direction. This spring lies in a spring barrel 25 which is connected at its lower end to lever 31. A spring rod 27 is pivoted at its upper end to the segment arm 7 and passes therefrom down through the spring barrel and through the spring 23 therein. It also goes loosely through two sleeves 28, 29, both of which are in the spring barrel, and are capable of-longitudinal movement therein, and they are respectively in contact with the upper and lower ends of the spring 23. Just below the sleeve 29 in the spring barrel there is a shoulder 25 with which the sleeve 29 will engage when it has reached the end of its possible downward movement relative to said spring barrel. The spring rod is capable of sliding freely up and down within said spring barrel, and it has a nut 27 on its lower end which may be engaged by the sleeve 29. A shoulder 27 on rod 27 will be engaged by sleeve 28 when the latter is moved up.

When the cam shaft 8 is at rest, the parts are in the position shown in Fig. 2, in which the spring barrel has been pushed up to an extent such that its shoulder 25 has engaged sleeve 29 and has moved it and the spring 23 and the sleeve 28 up until the latter has come in contact with the shoulder 27 on the rod 27, and until the spring has been slightly compressed. Under these conditions evidently the rod 27 is being pushed up with light spring pressure, and this will cause such .a rocking movement of the segment 7 that,-through the intermediate mechanism, the end clamp 1 will be moved to the right until its shoulder, 1, is in engagement with the line stop. If, however, the lever 31 is rocked by the associated cam so as to 'carry its long arm down the spring barrel will be drawn down; its upper end will engage and mow the sleeve 28 down and thereby said spring will be compressed between sleeves 28 and 29, and the latter sleeve will in turn thrust against nut 27 and thereby rod 27 will be drawn down with a force dependent upon the compression and size of. spring 23. This will result in such a movement of segment 7 that the end clamp will be moved to the left toward. the fixed end clamp, 71. 6., in the line clamping direction with like spring pressure.

On the stud 9 a rocking lever 12 is mounted. A heavy spring 11 is secured at its upper end'to one arm of level 12, and at its lower end to a fixed bracket 33. This spring is a strong contractile spring and is normally under considerable tension tending to rock lever 12. lVhen it is rocked by this spring a boss 12 on the lever will engage a set screw 7 adjustable in an arm 7 of the segment 7, and thereby said segment will be rocked in that direction which will, through the described intermediate mechanism cause a. movement of the end clamp 1 in the line clamping direction. But the rocking of lever 12 by spring 11 is normally prevented by the cam 18 acting through link 21 which is pivoted at its up per end to the opposite arm of lever 12 and is connected 'at its lower end with thehorizontal arm of a bell crank lever 19, the vertical arm of which engages said cam 18.

In the lower edge of the line stop line 560 is a. notch 560 into which projects the tooth 562 which forms the upper end of a lever 562, which lever is rockingly mounted on the stud 4. The lower end of this lever is connected, by means to be explained, with one arm of a lever 569, the other arm of which carries a roller 569 which projects into a cam groove 570" in the cam- 5'70. A rod 565 is pivoted to the lever arm 569, and it passes slidably through a sleeve 566 which is pivoted to the lower end of the lever 562. A spring 564 surrounds rod 565, and is strongly compressed between sleeve 566 and a spring seat 567, on rod 565. A nut 565 engages the right end of the sleeve 566. \Vhen, now, lever 569 is rocked to the left, the lever 562 will be rocked in that direction which will cause the line stop slide 560 to be moved to the right,that is away from the matrix line which is between the two end clamps. If lever 569 is rocked in the opposite direction, its movement will be transmitted through spring 561 to the lever 562, thereby causing this lever to rock in the opposite direction. This spring 564 is. however, so strong that there is no yielding movement when the lever 562 is rocked in the direction stated. In fact, this spring 564 is merely a safety device to prevent some of the parts from being broken when the matrix line is expanded and thereby very strong pressure is applied to slide 560 tending to move it to the right. Under normal conditions the spring 561 will resist this movement. If, however, for any cause the pressure produced by the expanding line is so great that otherwise something would be broken, this spring 564 will yield sufliciently to prevent the breakage.

The justifier hammer 90 is-connected with the upper ends of two vertically movable rods 91 mounted in fixed guide brackets 92, 93. The lower ends of; these rods are connected by links 9 1 with the two arms 95 of a rocking sleeve 99 mounted on the frame work of the machine. One of these arms carries a roller 97 which engages the cam 96 fixed to the cam shaft. A strong spring 98 acts on this same arm to swing it upward and thereby move the justifier hammer up under spring pressure when the cam will permit that movement.

The four cams referred to, viz. 18, 96, 57 0 and 570 are so shaped that they will cause the described mechanism to operate in the following manner and sequence. When the cam shaft stops after one complete revolution, the parts will be in the position shown in Fig. 1,that is to say, the j ustifier hammer will be just below but out of contact with the space bands in the matrix line to be justified. The end clamp 1 under the influence of spring 23 will be moved to the right and held in contact with the line stop. The slide 560, and with it the line stop adjustment slide which is locked to it, and the line stop 565 which is integral with it, will have been moved slightly tothe right by the action on it of the cam groove 570 through the described mechanism, and the lever 12 will be held in the position shown, where it has no influence whatever upon the segment 7 It is when the parts are in this position that the unjustified line of matrices containing.

the expanding wedge space bands is lowered into position between the fixed end clamp and the movable end clamp 1. As the cam shaft now rotates, the slide 545 is moved to the left to its normal position. The lever 31 is rocked so as to reverse the direction in which spring 23 acts and thereby to cause the end clamp 1 to move to the left against the end of the matrix line. The cam 96 permits the spring to move the justifier hammer up, and this drives up the depending parts of the space bands, and thereby spreads the line. If the line is a full line,-

that is to say, if it contains enough matrices and space bands, so that when the line is expanded by the expansion of the space bands, it will be of standard length, the expanding line will push the end clamp 1 to the right until its shoulder engages the shoulder on the line stop. This full line is now justified, but requires alinement, and every machine of this character has alining mechanism. But since such mechanism is not a part of the present invention, it is not shown herein. In order to permit this alining mechanism to perform its function, lever 569 is now rocked by its cam so as to move slide 560 and the line stop slightly to the right. As it so moves, the end clamp 1 does not move with it,but remains in contact with the justified line, where it is held by light spring pressure from the spring 23. This pressure is suflicient to hold the space bands tightly enough to prevent them from dropping while the alinement goes on. After the alinement has been accomplished lever 569 is rocked in the opposite direction, and the slide 560 and the line stop are returned to their normal position, in which, as stated, the line stop engages the shoulder on the end clamp 1, and therefore the justified line is firmly clamped. While it is so clamped, the slug is cast therefrom by the casting mechanism provided for the purpose. If, however, the matrix line containing the expanding space bands is a short line, the

various parts receive the same movement,

but in that event the movable end clamp 1 will never be moved back so that its shoulder engages the line stop. This end clamp, however, will be held against the end of the line by the light spring pressure from the spring 23 during all of the described movements of the various parts concerned. After this short line has been alined, the cam 18 will have moved in such position as to withdraw its restraining influence from the lever 19, and thereby the spring 11 will be permitted to act. It will rock lever 12 so as to carry boss 12 against set screw 7 and thereby the segment 7 will be rocked by this strong spring in the direction such as to impart to the end clamp 1 a very strong force tending 'to hold it against the end of the short line.

This spring 11 is of such strength that when its influence is transferred to the end clamp 1 through the described mechanism, this end clamp will be so strongly pressed against the short matrix line as to make the j ointsbetween matrices metal tight for the casting operation. It will be understood that when a short line is so clamped by the end clamp 1 that the rear face of this end clamp during the casting operation will close so much of the mold slot as is not closed by the matrix line,and this because the rear face of said end clamp is in the same vertical plane with the rear face of the matrices in the line.

Of course the cam 18'will act in the described manner during every revolution of the crank shaft, and therefore the end clamp 1 will become subject to the influence of the strong spring 11, whether the line be short or of standard length. If the line is of standard length, however, this spring has really no influence upon the end clamp 1, because said end clamp has been pushed to the right by reason of the expansion of the space bands, and is held firmly against the line stop during the casting operation. The back pressure on the end clamp 1 produced by the expansion of the wedges is always much greater than the forward impulse to spring 11. After the casting operation has been concluded the cams on the cam shaft return the parts to the initial position first described. All clamping pressure on the matrix line is thereby taken off. The movable members of the space band are permitted to drop, and the line is now in condition to be raised by the elevator and taken to the distributing mechanism.

It is obvious from the foregoing that the length of a full line is determined by the position of the line stop. In machines of this character, however, there must be means by which the length of the standard line may be varied as required. To do this with the present mechanism the position of the line stop with respect to slide 560 is made adjustable. To accomplish this a bracket plate 547 is fixed to the slide 560. An endwise movable rotatable shaft 550 is mounted in this bracket, and it has an operating handle 550 on its front end. A gear 546 is fixed to this shaft and engages rack teeth 54:5 on the upper edge of the line adjusting slide 545. By turning this shaft in one direction or the other the line stop 545 integral with the line stop adjusting slide 545 may be brought to the required position relative to the line stop slide 560. When the line stop is in the required position it is there held by means of a serrated disk 550 fixed to shaft 550, which fits in a corresponding serrated hole in the ratchet plate 552 which is fixed to bracket 547. In order that this shaft may be turned to adjust the line stop, the shaft is moved endwise far enough to withdraw the disk 550 out of the serrated hole in the plate 552. the shaft to be turned, and after it has been turned far enough, the shaft is moved endwise in the reverse direction and carries the serrated disk into said hole,this latter being assisted by the spring plunger 551.

Having described our invention, claim:

1. In line clamping mechanism for type bar making machines, the combination of a line abutment, a movable end clamp, spring actuated mechanism for moving said end clamp toward or away from said abutment as required, and an adjustable line stop adapted to limit the movement of said movable end clamp away from said abutment.

2. In line clamping mechanism for type bar making machines, the combination of a line abutment, a movable end clamp, spring actuated mechanism adapted to move the movable end clamp toward or away from said abutment as required, a line stop adapted to limit the movement of said end clamp away from said abutment, and mechanism for automatically moving said line stop from its normal position away-from said abutment and then back to its normal position, substantially as specified.

3. In line clamping mechanism for type bar making machines, the combination of a This permits I 4. In line clamping mechanism for type 1 bar making machines, the combination of a line abutment, a movable end clamp, spring actuated mechanism adapted to move the" movable end clamp toward or away from said abutment as required, a line stop adapted to limit the movement of said end clamp away from said abutment, a line stop slide to which the line stop is adjustably fixed, and mechanism for automatically moving said line stop slide from its normal position away from said abutment, and then back to its normal position, substantially as specified.

5. In line clamping mechanism for type bar making machines, the combination of a line abutment, a. movable end clamp slide having its rear face in the same vertical plane as the rear faces of the matrices to be clamped between it and said abutment, mechanism actuated by a light spring for moving said end clamp toward said abutment, a heavy spring adapted also to move said end clamp toward said abutment, and means for holding the latter spring out of action and for allowing it to act as required, substantially as specified.

6. In line clamping mechanism for type bar making machines, the combination of a line abutment, a movable end clamp slide having its rear face in the same vertical plane as the rear faces of the matrices of the line to be clamped between it andsaid abutment, mechanism for moving said end clamp, a light spring adapted to move said mechanism, a heavy spring adapted also to move said mechanism, two synchronously rotating cams, and mechanisms operated thereby the one for causing the light spring to move said mechanism in either direction, and the other for preventing the heavy spring from acting or for allowing it to act, substantially as specified.

7. In line clamping mechanism for type bar making machines, the combination of a line abutment, a movable end clamp slide having its rear face in the same vertical plane as the rear faces of the matrices in the line to be clamped, a rocking segment, intermediate mechanism whereby the rocking of the segment will move the movable end clamp, a light spring acting on said segment, a rocking lever having a portion adapted to engage a portion of said segment,

a heavy spring connected with and acting upon one end of said rocking lever, a cam,

of the segment will move the movable end clamp, a light spring adapted to move said segment inveither direction, a rocking lever having a' portion adapted to engage a portion of said segment, a heavy spring connected with and acting upon one end of said rocking lever, and two cams, mechanism intermediate of one cam and said rocking lever whereby the latter is allowed to act or is restrained from acting, as required, and mechanism intermediate of said light spring and the other cam whereby said light spring will exert its force to move said segment in either direction as required, substantially as specified.

9. In line clamping mechanism for type bar making machines, the combination of a line abutment, a movable end clamp slide having its rear face in the same vertical plane as the rear faces of the matrices in the line to be clamped, a rocking segment, intermediate mechanism whereby the rocking of the segment will move the movable end clamp, a light spring acting on said segment, a rocking lever having a portion adapted to engage a portion of said segment, a heavy spring connected with and acting upon one end of said lever, a cam, a lever engaging with and operable by said cam, means connecting said lever with said rocking lever, and an adjustable line stop having a part which projects into the path of a part of the movable end clamp and is adapted to limit the movement of the latter away from the line abutment.

10. In line clamping mechanism for type bar making machines, the combination of a line abutment, a movable end clamp slide having its rear face in the same vertical plane as the rear faces of the matrices in the line to be clamped, a rocking segment, intermediate mechanism whereby the rocking of the segment will move the movable end clamp, a light spring acting on said segment, a rocking lever having a portion adapted to engage a portion of said segment, a heavy spring connected with and acting upon one end of said lever, a cam, a

lever engaging with and operable by said cam, means connecting said lever with said rocking lever, an adjustable line stop having a part which projects into the path of a part of the movable end clamp and is adapted to limit the movement of the latter away from the line abutment, a line stop slide to which the line stop is adjustably connected, a lever engaging said line stop adjustment slide and determining its position, a cam, a lever operable thereby, and a connection between said lever and the lever which controls the position of the line stop adjustment slide.

11. In line clamping mechanism for type bar making machines, the combination of a line abutment, a movable end clamp, a line stop slide, a line stop adjustably secured to the line stop slide and adapted to engage the movable end clamp and limit its movement away from the line abutment, and a justifying hammer with a cam shaft, four cams thereon, mechanism intermediate of one cam and the justifying hammer for controlling the operation of the latter, a light spring, end clamp operating mechanism intermediate of said spring and the movable end clamp, means operable by another of said cams to cause said light spring to move the end clamp operating mechanism in one direction or the other as required, a lever adapted to move and control the position of the line stop slide, mechanism intermediate of a third cam on the cam shaft and said lever for controlling the position of said lever, a heavy spring, means through which said spring may exert its force to move the movable end clamp in the line clamping direction, and mechanism intermediate of said spring and the fourth cam on the cam shaft for allowing said heavy spring to act or for holding it out of action as required.

12. In line clamping mechanism for type bar making machines, the combination of a. line abutment, a movable end clamp having rack teeth, a rocking gear segment, a connected gear and pinion engaging respectively with the teeth of. the end clamp and the teeth of said gear segment, and spring actuated mechanism for rocking said segment in either direction as required.

13. In line clamping mechanism for type bar making machines, comprising the combination of a line abutment, a movable end clamp having rack teeth, a rocking gear segment, a connected gear and pinion engaging respectively with the teeth of the end clamp and the teeth of said gear segment, a cam, a lever engaging with and operable by said cam, a spring barrel connected with said lever, a spring rod connected with said gear segment, a spring in said spring barrel, two sleeves located in said spring barrel and engaging opposite ends of said spring, shoulders on the rod adapted to respectlvely engage said two sleeves, and shoulders on the spring barrel adapted respectively to engage said two sleeves.

1 4. In line clamping mechanism for type bar making machines, the combination of a line abutment, a movable end clamp having rack teeth, a rocking gear segment, a connected gear and pinion engaging respectively with the teeth of the end clamp and the teeth of said gear segment, a cam, a lever engaging with and operable by said cam, a spring barrel connected with said lever, a spring rod connected with said gear segment, a spring in said spring barrel, two sleeves located in said spring barrel and engaging opposite ends of said spring, shoulders 0n the rod adapted to respectively engage said two sleeves, shoulders 0n the spring barrel adapted respectively to engage said two sleeves, a rocking lever having a portion adapted to engage a part of said gear segment, a tensioned spring acting on one arm of said lever, a cam, and intermediate mechanism preventing the spring from rocking said lever or permitting it to rock the same as required.

In testimony whereof, we hereunto afiix DAVID PETRI-PALMEDO. EDWARD F. GODDARD.

Witnesses:

GILBERT B. FAYETTE, VVALTER BUsWELL.

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