US748870A - Machine for rolling carpenters squares - Google Patents

Description

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'1L K. JONES. MACHINE FOR ROLLING GARBENTERS sQUARBs APPLICATION FILED JAN. 23. F903.

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@1+L'KjJ0NBs. MAGHINBFoR/ROLLING CARPENTER@ SQUARES.

APPLIATION FILED JAN. 23.1903.

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' PATENTED JAN'. 5, 1904. H. K. JONES. MAGHINBFUR ROLLING GARPBNTBRS SQUARES.

APPLIOATION FILED JAN. 23. 1903.

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PATENT OFFICE.

, HORACE K. JONEs, OF HARTFORD, CONNECTICUT, AssieNon TO'THE RUSSELLL AND EEWIN MANUFACTURING COMPANY, OF NEW BRITAIN, CONNECTICUT.

:MACHINE FOR ROLLING CARPENTERiS SQUARES`.

sPEcIFrcATIoN forming part of Letters Patent No. 748,870, dated January 5,1904.

Application filed January 23, 1903". Serial No. 140,262. (No model.)

To a/ZZ whom, t may concern:

Be it known that I, HORACE K. JONES, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Conneeticut, have inventedcertain new and use ful Improvements in Machines for Rolling Carpenters Squares, of which the following is a specication. v f My invention relates to improvements in machines for rolling carpenters squares 5 and the main object of my improvement is to produce a machine for rolling right-angular `blades, like carpenterssquares, to a tapering thickness.

In the accompanying drawings, Figure 1 is a front elevation of my machine with parts broken out and in section. Fig. 2 is a side elevation of the left-hand side of the same with a part of the left-hand upright of the frame broken off. Fig. 3 is a plan View of my machine. Fig. 4 is a rear elevation thereof. Fig. 5 is a diagram, on a greatly-reduced scale, illustrating the manner of cutting the blades from a sheet of metal preparatory to rolling. Fig. 6 is an enlarged side elevation of the lifting-cam for the .lever -pressure mechanism. Fig. ''is a side elevation, partlyI Y in vertical section, of the boxes for the up;

per roll of my machine, the said figure being on a reduced scale as compared with Fig. 6, but enlarged from Figs. 1 .and 2, which partially show the said boxes. Fig. 8 is an enlarged central longitudinal section, partly in elevation, of the clutch mechanism. Fig. V9 is a transverse section of the same on the line ma: of Fig. 8, the gear-wheel that the clutch drives beingomitted.

` A designates the bed of the machine, having mounted thereon at one end the frameB for the rolls and adjacent parts and at 'the other end the frame C for mounting the driving the necessary pressure. It is immaterial except for convenience of construction which one of the rolls is the movable or adjustable one; but, as shown, the lower roll 6 is, (ixed as to its position, and the upperA roll 7 is the one that rises and falls to make the necessary adjustment. These rolls' are on short shafts 8, one end of which is squared, as at 9, Fig. 1,'or otherwise arranged for being engaged with and driven by the couplings 10 on the driving-shaft D and countershaft 1], having similar squared driving portions 9a, whereby when the couplings are engaged the rolls move in unison with' the shafts D and 11, while at thesa'me time absolute aline-v ment is not required. The squared portions` 9ab are long enough to permit the couplings 10 to slip endwise for disengaging. per half-box 12 for the upper roll is made long enough for both ends ofthe said roll and extends from upright to upright of the frame B, as best shown in Fig. 1, in which the upright 13 is broken out and partially shown in section to show one end of the said half-box. Underneath the said halfybox 12 and under the endsof the shafts 8 a lower.

half-box 12a is secnredin anyproper manneras, for example, by screws 35, Fig. 7-so that the upper roll necessarily rises and falls, with the said half-box 12. At the top of this `halfbox 12 is a toggle-link 15,and on this link is the toggle-lever head 16, surmounted by another toggle-link 15 and cross-bar or abutment 17, all of which extend from upright to upright,` as indicated by broken lines in Fig. 1. 'Set screws 18 extend through the uprights 13 and 14 and rest on the cross bar 17 for adjusting the position of the upper roll when it is forced downwardly'by the toggle lever and links. A spring 19, the upper end of which `is attached to cross-rod 20 and the lower end of which is secured tothe upper half-box 12, has a constant tendency to lift the said half-box andupper roll to its upper- `most position and does lift it or hold it up when the said halfbox is not forced downwardly by the toggle lever, links, dac. This construction allows the spring 19 to lift the upper rollwhen the lever 2l is at its lowest position, thus leaving an open space between The upthe rolls for the insertion of the blank to be rolled. The toggle-lever 21 extends from its head 16 rearwardly to the cam 22, that is mounted on the cam-shaft 23 at the rear part of thev frames B and C. This cam-shaft is driven by the gearwheel 24 and clutch 25, the said wheel being loosely mounted on the Said shaft While the clutch is rigid thereon, s0 that the shaft is driven by the said Wheel when the clutch is engaged therewith, but remains stationary while the wheel rotates when the clutch is disengaged therefrom. The clutch is of the ordinary spring-pin type, the pin snapping into engagement with the wheel 24 whenever the said pin is released and staying in engagement until it is withdrawn. This clutch 25 is shown in detail in Figs. 8 and 9. The gear-wheel 24, a part only of which is shown in Fig. 8, has two or more pin holes or pockets 43, concentrically arranged on the side that faces the clutch. A sliding pin 44, having a shoulder 45, is mounted in the clutch-body and provided with a spring 46, `one end of which spring bears on the bottom ot the hole within the pin in which the said spring is seated, while the other end of the spring abuts against the cap 47, whereby the said spring exerts a constant tendency to force the pin 44toward the gear-wheel 24.l

The clutch-lever 27 has a beveled or wedgeshaped end 28 and a holdingface 48. A spring 49, with one end secured to said lever and its other end hooked to the frame or any fixed support, has a tendency to hold the end of the clutch-lever up against the under side of the chuck in the position shown in Fig. 9. The clutch-pin is of a length to strike bottom in the hole or socket in the'gear-wheel when the shoulder 45 is a little distance from the confronting side face of the annular groove in the clutch, so as to leave a free space for the point of the clutch-lever to enter. When the clutch-lever is depressed to remove the beveled end 28 from the path of the shoulder of the clutch-pin, the said pin underl the iniuence of its spring enters the first -hole or socket in the gear-wheel that presents itself to said pin. The gear-wheel and clutch will vthen rotate together so long as the clutchlever is depressed. As soon as the clutchlever is released to have the spring 49 draw the beveled end up to the clutch said end engages the shoulder 45 at the rst revolution of the clutch and withdraws the pin, which is stopped with its shoulder resting on the holding-face 48. If the clutch-lever is released immediately after its withdrawal, the clutch will stop the gear-wheel 24 and parts driven thereby at the end of the first revolution of the clutch.

The bed A may rest upon any table, bench, or support, the top of which is indicated by the base-line E, Figs. 1 and 4, and on the said support is a clutch-lever bracket 26. The clutch-lever 27 is mounted on the said bracket with its usual curved and beveled end 28, adapted to enter the ordinary groove in the 'the foot-treadle with the said lever.

clutch to withdraw the clutch-pin asv the said pin rides up the incline or bevel of the clutchlever, as in ordinary clutches of this class. The clutch-lever 27 is thrown out of engagement with the clutch by means of the foottreadle 29 and bar 30, connecting the end of Any suitable spring may be employed for forcing the clutch-lever and treadle into the position for making the said lever engage the groove of the clutch. The gear-wheel 24 engages with and is driven by a similar gear-wheel 31, fixed on the driving-shaft D. The said driving-shaft is connected with the countershaft 11 by means of the pinions 32. It will thus be seen that the treadle and clutch devices constitute mechanism for starting and stopping the cam while the rolls rotate.

In Fig. 5 I have shown how the square blanks or blades may be cut from a plate of metal of the proper thickness. These blanks, it will beseen, are right-angular blades that cannot be passed endwise through the rolls between ordinary uprights. I have therefore made the upright 13 of a special construction designed expressly for the introduction of substantially the whole length of either square blade into the rolls for being operated upon. This I accomplish by forming a blade-space 33 in the front of the upright 13, which space extends back to or a little beyond the central point of the rolls, as shown in Figs. l and 2. In order to give the said upright the proper strength, I form a web 34 across the ends of the boxes and on the outer side of the upright near its upper end. This blade-space is designed to receive one blade into it, while the other blade is passed directly endwise between the rolls far enough to permit the rolls to act on the said blade from the angle to the outer end thereof. As shown, the cam-shaft and drivingshafts are geared so as to revolve at the same speed when both are moving; but the gearing can be varied, according to the work required. The size of the rolls, as shown, is such as to traverse one of the longer blades at one revolution of the cam-shaft and rollsthat is to say, roll a blade that is two feet long at one revolution. The clutch and the cam are so mounted on the shaft that the clutch-pin is withdrawn and stops the camshaft just as the highest point of the cam passes theend of the toggle-lever, which then falls to open the rolls. The shape of the cam is clearly shown in Fig. 6. This cam is ot the proper shape and size for operating the lever mechanism of the rolls to give the desired taper at one revolution of the cam to the longer square blade, (which is two feet long.) The cam has a short seat 36 just in the rear of the drop 37 back of its highest point 38. From this seat the cam-face rises very rapidly for the rst quarter of a revolution from the said drop, making nearly but not quite one-half of all its rise ou the said first quarter, over half of this being made at IOO IIO

the first eighth of a revolution. The radial broken lines 39, 40, 41, and 42 indicate, re` spectively, the first eighth, quarter, half, and three-quarters of a revolution from the drop 37, while the broken circle arou'nd the cam indicates the path of the highest point 38 of the cam, thereby more clearly showing the rise or eccentricity. About two-thirds of the entire rise of the cam is made duringits Iirsthalfof a revolution, while only about one-eighth of the entire rise is made on the third quarter and, as shown, only about one thirty-third on the last quarter. The' most essential part of the of the blank square blades to be rolled, so

that the said bladescan readily be passed between the blades when the rolls are moving.

An ordinary square blade is so thin that when it tapers in thickness from end to end the taper must necessarily be veryl slight. In this connection it should be noted that the rise in the'cam, as herein shown, is many times more than the rise and fall of ,the upper roll, the lever and toggle-links acting as mechanism for reducing motion, whereby the motion of the cam imparts a comparatively slight closing motion to the rolls. By the employment of mechanism for reducing motion between the cam and the rolls I am enabled to close the rolls gradually and evenly with a powerful pressure. The operator pushes a blade end wise between the rolls until the connecting portion of the two blades comes between the rolls, while the member or blade not to be then rolled projects to the left through the blade-space 33. He then puts his foot on the treadle 29 to withdraw the clutch-lever 27 and permits the spring-pin of the clutch to engage the wheel 24 to start the camshaft. The cam 'then acts on the mechanism comprising the toggle lever and links to force the rolls together, and as soon as the rolls pinch the blade it moves outwardly toward the front, the rolls coming closer and closer together as the blade moves along, so as to roll the blade to a tapering thickness. The machine may readily be adjusted so that the rolls will begin to act on the blade being rolled at a point substantially in alinement with the inner edgeof the companion blade. inasmuch as the object of having the square the thickest at or near the angle is to strengthen the angle, the taper may decrease faster for the iirst few inches from the angle than for the rest of the blade. In fact, the

thinnest end of the longer blade may, if desired, be of a uniform4 or'nearly-uniform thickness for some length. As soon as the cam-shaft is started andthe rolls begin to act on the blade the operator releases the foot'- treadle and clutch-lever, so that the springpin of the .clutch is caught and thecarn is stopped after making one revolution, during which the blade will be ejected from the rolls andthe machine is ready to receive another blade. The machine may be arrangedfor rollingoneof the longer blades to the desired taper at one revolution of the cam, and the shorter blade may be rolled under the saine conditions,and it will correspond in taperjand thickness to the longer blade fora distance from-its companion blade corresponding to its length.

If the machine -is made to taper, the whole length of the longer blade and both blades are then rolled, the result `is thatthe shorter blade is not quite so thin at its thinnest end. If desired, all the long blades maybe rolled with the machine adjusted or arranged in one way and the shorter blades rolled afterward under a dierent adjustment or with a dilferent cam. If the stock or amount of taper is such that it cannot be rolled by once passing the blade between therolls, the blade may be inserted for only a part of its' length between the rolls and then startingthe machine to force the rolls together and have them first pinch or act on the blades at the middle of their length or at any desired point re# moved from the connected ends of the blades. At the next operation the blade may be inserted a little farther or at its whole length. In this manner the blades can be rolled at only one or several passes by merely inserting a greater or less portion of their length prising two uprights in which the said rolls are mounted one of the said uprightsof the said frame having the blade-space, open at the front and extending back to the central point of the rolls.

- 2. The combinationof the frame with the rolls mounted in the front part thereof, one of which rolls is movable to and from the other, a cam-shaft mounted at thel rearpart ofthe said frame, gearing connecting the said camshaft and rolls, a cam on the said cam-shaft,

toggle -links arranged in the plane within which the axis of both of the said rolls lie, and an operating-lever extending from the said links to the said cam.

3. The combination of a frame with the rolls mounted therein, one of the said rolls being movable to and from the other, a cam mounted in the frame separately from the said rolls, the toggle-links and the lever having a head at one end lying between the said links and second toggle-link with one end mounted on.

the said abutment and its other end on'the said lever-head, a lever extending laterally to the axis of the rolls from the said leverhead and rigid with the said head, anda cam for acting on that end ofthe said lever which is opposite the said head.

5. The combination of thev rolls, one of which is movable to and from the other, with a cam rotatingr in connection. with the said rolls, and mechanism between the said cam and rolls for reducing the motion of the said cam, substantially as described.

6. The combination of the rolls, one of which is movable to and from the other, with a cam having the drop 37 and rising face eX- tending from bottom to top of the said drop, the said face making the major part of its lift at the first three-quarters of its revolution from the said drop and its most rapid lift within its rst quarter of a revolution from the said drop, and mechanism between the said cam and rolls for reducing the motion of the said cam.

7. The combination of the rolls, with the toggle-links and lever actingv as mechanism for reducingmotion, a'nd the cam having the drop and rising face for acting upon the said lever, the most rapid lift of the said cam-face being at the rst quarter of its revolution from the said drop.

8. The combination of the rolls, one of which is movable to and from the other, with a cam and connecting mechanism for acting upon the said movable roll for forcing the rolls together, and lmechanism for starting and driving the said cam and for stopping it at a predetermined point of its movement.

9. The combination of the rolls, one of which is movable to and from the other with a cam which may rotate in connection with the said rolls, mechanism between the said cam and rolls for reducing the motion of the said cam, and mechanism for starting the cam and then stopping it at the end of one or more complete revolutions.

. HORACE K. JONES.

Witnesses: l

M. S. WIARD, W. E. WEIGHTMAN.

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