US106729A - Improvement in circular-saw mills - Google Patents

Description

TITUS H. RUSSELL, OF NORTHFIELD, VERMONT.

Letters Patent No. 106,729, dated August 23, 1870; aatedated August 17, 1870.

avv-

IMPROVEMENT IN' CIRCULAR-SAW MILLS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

e it. known that I, TITU's H. RUSSELL, ofNorthiield,`in the county of Washington, and'St-ate of Vermont, have invented a new and useful Improvement in Circularsaw Machines; and I do hereby declare that the following is a full, clear, and exact description thereof', which will enable others skilled in the art to make and use the same, reference heilig had to the accompanying drawing forming part of this speeitication, in which- AFigure 1 is a transverse vertical section of my invention taken 'in the line :t :t of fig. 2.

VFigul'e 2 is a plan or top` view of the same.

Figure 3 is a tranverse vertical section of a port-ion of the same taken in the liney y, tig. 2.

Figure 4, adetached plane or top view of an expandingpulley pertaining to the same.

Figure 5, a front view of fig. 3. Figure 6,'a longitudinal vertical section of a portion of the same taken in the linex' of iig. 2.

Figure 7, a vertical section ot' a portion of the same, taken in the line z z, tig. 2.

Similar letters of reference indicate like parts. This invention relates to a new and improved sawing-machine of that class in which a circular saw is employed.

lt consists in a novel construction of the machine,

as hereinafter fully shown and described, whereby several important advantages are obtained, to wit:

First, in the setting of the log to saw. v

Second, in the moving ofthe setting-bar back from the saw.

Third, the adjusting of the knees, so that aproper hearing of the log against them may always be obtained.

Fourtlnthe preventing of the beating of the sawmandrel.

Fifth, in an improved belt-slipping mechanism, arranged in connection with the -saw-arbor and sawguide, whereby thesaw and guide are drawn from the log at the'end of each cnt, and simultaneously with the, raising of the friction-pulley from the drivingbelt.

Sixth, in an improved arrangement or4 application of agnide or gauge-roller, for determining the thickness of the stuff being sawed, said guide 0r gauge-roller heilig used chiefiy in sawing thick stuff.

In the accompanying drawing- A A represent two parallel ways'orgnides, on which a carriage, B, is fit-ted and works, and

C is a setting-bar, which is tit-ted and works on bloc-ks D D, secured transversely on the carriage.'

lhe log is secured or dogged to this setting-bar,

and the latter is moved on the blocks D D by means cured bevel-pinions G G, which gear into bevel-wheels H H on a shaft, I, which has its bearings, a u, attached to the carriage B, and on said shaft I, at about its center, there is keyed a wheel, J, the periphery of which is toothed, as shown at b, said wheel having a concentric iiange, c, projecting from one side `of it, as shown in figs. 2 and 3.

On the shaft I there is placed, loosely, a bar, K, which is forked, or made with two sides, so as to straddle the wheel J, as shown clearly in tig. 5, an-l within the bar K, to the innersurface of one of the sides thereof, there is secured, by a pivot-bolt,d, a bar, L, which rests upon` a jaw,vM,- the latter bearing on the upper surface of the fiange c, a projection, d', 0n said bar fitting in a notch in the upper surface ot'. the jaw M, and keeping the latter in place. (See dotted lines in iig. 3.) g

A similar jaw, N, bears against the under side of the flange c, and this jaw N is retained in place by resting on a projection, 0, on bar L, (also seen by dotted lines in iig. 3.)

To the inner surface of the opposite side of the bar K there is secured, by a pivot-bolt, j, a pawl, O, which is connected, by a chain, y, with a loaded arm,

P, the latter being fitted on a pivot at the upper end.

of the har L. l

This loaded arm P has a tendency to keep the pawl O elevated and free from the tcethfb, of the wheel J, as will be fully understood by referring to fig. 3.

Q is a forked bar, which straddles the bar K, and is connected to it by pivot-bolts h h.

The lower part of the bar Q extends outward at right angles with the upper part, and hasl a screwrod, R, passing through it, with a. nut, i, on its outer end, the inner end of said screw-rod being tted in the bar L.

A single bar, S, is secured to the upper end of the bar Q, and a handle, T, is attached to the upper end of bar S lby a joint, j, the handle T heilig connected by a chain, k, with the loaded arm P, (see more particularly fig. 1.) v

The bar Q is provided with two pendent arms, l I, to the lower ends of one of which there is secured, by a joint, m, a bar, U, having a roller, m', at its lower end, and a bar, V,`liaving a similar roller, u, at it-s lower end, is attached, by a joint, o, to the lower end of the other arm l'.

The joints m o admit of the bars U V moving in one direction only, as indicated by the arrow in ti". 5.

W is aiblcck, fitted 'm the ooring of the building or in the base ot' the machine, and having an oblique position.

This block is arranged in such a manner ,that it lnay be moved down level with the dooring, or raised upward above it, the latter position being given it when it is designed to have the -machine self-setting. l X is a segment slot, made in a plate, Y, which is attached to the carriage B, and through which the shaft I passes, loosely, the slot X being concentric with the shaft I.

A line, p projects, laterally, from the plate Y, andV extends into the slot X. f y

Z isa stop, which is also itted in slot X, and this stop is connected to 'a rod, A', on which a nut, B,.is fitted, (see tig. 1.) By turning this uut the stopZ may he moved or adjusted in the slot X.

Thisadjustable stop is for the purpose of regulating the movementof the bar K, and determining.'` the length of the feed movement ot' the setting-baryC.

At the termination of each cut of the saw, and after the log has been' gigged back, the operator pulls the handle 'l in the direction indicated by thcl arrow 1, (see fil'. 1,) and the jaws M N grasp or clutch the tiange c, and tum the wheel J, aml, consequently, thc shaft I, which, through the' medium of the wheels and pinions H G, turns the screws E E, and, consequently, moves the setting-bar G.

In order to more the setting-bar C back, when a new log is' to be dogged to it, the operator raises the outer emi ot' the handle T, so that a projection, (LX, on the loaded arm will .press against the bar Q,.above its pivot-bolts h It; and the lower end, of the bar S, in consequence of being connected to Q by the rod R, will be shoved toward the setting-bar C, and the jaws M N rendered inoperative, so that they will not turn the shaft l, and the loaded end of the arm P, being raised by the upward movement ot' the handle T, the paw] O is allowed to engage with the teeth b of' wheel J, and, consequently, when the handle 'l is shoved back in the direction indicated by arrow 2, the shaft I 'will be turned and the setting-bar C moved back.y

In lieu Yof this arrangement, however, for eiiecting this purpose, the screws E may be turned by a direct application of power, either through the. medium of a crank or key. 1 prefer the former, and I-have one ot' the screws E made tubular, see tig. 7, and have a tubular slide rod, G', fitted therein, the outer end of G' being provided with a. jointed crank, q, which, when the rod C' is drawn out from the screw, may be adjusted in proper working position, and, when not 're-quired for use, may be adjusted in a straight line and with the rod C', shown within the screw E, the crank heilig s hoved wit-hin the rod C.

In order to render the device self-setting, all that is required is simply to raise the oblique block \V, so that the rollers m n ot' the bars U V may come in contact with it under the movement of the carriage The log to be sawed (shown in red) is secured to the knees of the setting-bar G by means of the usual clogs D'. v

'lhese knees, designated by P', are each provided with an adjustable bar 11", which maybe moved further in or out ti'om the knees, by gearing a' and a screw, b', (see tigs. 1 aml 2,) or by ,other suitablev means.

lhe'object ot' these adjustable bars is to always obtain a proper bearing ofthe'log against all of the knees, and, with a crooked log, this result could not otherwise he obtained.

' G represents .the circular saw, which is placed upon a mandrel, H', the latter being hollow., and having a spiral fan, I', in one end ot it. 'v

The mandrel is also perforated at points withinits bearings, as shown at c', Iig. 1.

Oil being poured within the mandrel, the centrifugal force generated by the rotation of the same will cause the oil to escape through the perforationsvc, and keepthe bearings perfectly lubricated.

The fan 1 will also canse a current of air to pass through the mandrel, which will keep the latter perfectly cool.

The mandrel H' is driven by a belt, J, from an ex'- panding pulley, K', composed of the sliding parts d. df, which are adjusted 'by a right-and-left screw-rod, L.

' By this means the speed ot' the saw may be regn lated while the machine is running without any ditiicult-y whatever.

This expanding pulley, however, is applicable to other machinery' than sawing-machines, land as it will be the subject of a separate application, it is not nec-- essary to describe it further in connection with the present invention,

The mandrel H' has two hubs or bosses, c c', upon it, between which there is a collar, f', the latter being loose on the mandrel, and having a pendent-rod, M, attached by a pivot yoke, g', the lower end of the rod M' being stepped loosely in a plate, h.'

N is a lever, which is connected by a har, O', with a sliding plate, P', having an oblique groove, t', made in its lippensurtace, and the pendent-rod M' is provided with lateral arm `7",.whicl1 has a block, k', attached, said block being titted in the oblique groove 'i'.

By moving thislever N', it will be seen that a lateral movement will be given the pendent-rod M', and the mandrel H', moved longitudinally, so that at the eml of a cut the saw may be drawn from the log, and the latter gigged back with the carriage, without touching the saw.

Q isa saw-guide, which is fitted in a bearing, and is allowed to slide freely therein.

This guide is attached lto the outer end ot' the shut arm mf of a bent lever R', the other and longer arm,

n', of said lever being connected to the bar O'.

By this arrangement the guide Q will be drawn from the saw simultaneously with the drawing of the saw from the log, and I design to have the idle pulley on the driving-belt connected with the lever N in such a manner that, when the saw aml its guide are thus moved,the idle pulley will be raised, so as to slackeu the belt, and render the saw inoperative during the gigging back movement ofthe carriage and lock. 1

S is a gauge-roller, which is, titted in an upright frame, T, the lower end ot' which has a nut, U', that is tit-ted on a screw-shaft, .\V.

This nut has an index, o', projecting from it, which extends over a. graduated plate, p', on the frame of the machine.

The log, in being sawed, bears against this gaugeroller, and Ainadjusting the frame 'l" by turning the shaft- W, the roller S maybe set for sawing timber of greater or lesserthickness, as desired.

1n sawing thick timber, the roller S is all that is used for a gauge.

Having thus described my invention,

I claim as new and desire to secure by Letters Patent@- Y v 1. 'lhe combination of the ba-rsQ K L and jaws M N, witlr the dangedwheel 4J, screws E, and gear-4 ing G vH, substantially as described for the purpose specilied. Y'

2. The arrangement of the jointed bars U V, car. rying the rollers m' n, with reference to the feeding mechanism and the oblique bar W', for reuderilw the device self-setting, as herein shown and described. 3. llhe combination 4otl the handle "l, loadedarm P, and pawl O, with the bars Q K,'and the teeth b ot' the wheel J, all arranged and operating' substantially as described for the purpose specitied.

4. The adjustable crank q, constructed as described,

tted or applied to the screws E, substantially iu the manner as and for the purpose set forth.

5. The hollow mandrel H', perforated'nt its-boarings, and receiy'ing in its end opposite the saw, the spiral fan 1', as herein described, for the purpose specified.

6. The combination of the collar j", pendent-rod M', block k', sliding plate l, having the oblique,

groovefi', bar O', und lever N', for the purpose of giving the saw-umudrel H' :n longitudinal adjustment., substantially us herein described, for the purpose specified.

7. The adjustable gauge-roller S', having its frame T arranged to swing upon the screw-shaft; W' by the nut U, said nut; being provided with the index O', working:r over the graduated plate p', upon the frame of the machine, us herein described for the purpose specified.

lllUS H. RUSSELL.

Witnesses:

WILLIE T. Rossum., RoswELL DEWEY, Jr.

Images