US810749A - Hacksawing-machine. - Google Patents

Description

NQt 810,749, PATENTED JAN. 23,v 1905` J. HAMPTON, SR. HACKSAWING MAGHNE.

APPLICATION FILED Nov. Io. 1904.

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JOSEPH HAMPTON, se., or K INGS HILL, WEDNESBURY, ENGLAND; HAoKsAwuNG-MAOHINE.

Speccation of Letters Eatent'.

Patented Jan. 23, 1906.

' Application filed Nxovember 10, 1904. Serial No. 232,228.

ject to Wear'than in machines as at presentconstructed. Further, the starting of the machines is facilitated and unattended with risk of accident to the attendant, and the sto ping of the machines-ismade automatic.

constructinga hacksawemachine accord mgjto m invention l lvot' the saw-framecarrying ever to a fixe axis or spindle at a 'short distance behind theA driving-shaft of the machine, the angular 'motion of the sawframe-carrying lever in a vertical plane-being insured by a curved upright or guide at or about'the middle of the bed of the machine, a

in attached to,the savvrame lever working in a curved slot in the said upright or guide. The Wei ht of the saw-frame lever is partially balanced the outer end of t e said ever bf a belt or the likey assing over a pulley. T e saw-franie has t e usual -dovetail sliding'connectionwitn the'saW-frame lever, vand the said saw-frame is Worked from the crank `plate or disk on the driving-shaft in the ordinary Way. l

' Figure 1 of the accompanyingV drawings represents in side elevation a hacksa'W-machine to which the improvements constitutlng my vinvention are applied, the hacksaW' being in its raised or out-ofaction position.

" Fig. 2 is a perspectiveview of the upper .por-

. tion of the machine with the hacksavv` down f'parts being brokenaway. Fi 4f is a cross? "section of the machine, the sands 'or in its position-for Work. Fig. 3 isan ele- ,vation of the rear end of the machine, certain ection being taken on the dotted line 'x Fig, 1.- l Fig. 5

'represents in side elevation the rear vportion ,of the haclrsavv-.frarne-carrying lever de- :tachefl: Fig. 6V represents a; portion of the the seid p machine.

by a de endin Weight attached to section. .-Fi s. 3, 5, and are 'drawn to a larger scale t an Figs. 1, 2, and4.

The'same characters of reference indicate the same parts in the several figures of the drawings.

a is the saW-frame-carrying lever,- ivoted at its rear end to an independent axis The said lever a is slotted at c (see Fig. 5) to er 'mit it to Work over the driving-shaft d o the The saW-frame-carrying lever a is guided in its angular motion and the plane of the saine preserved by the curved slotted upright e, in the slot ol- Whl .i a inf, proie/tin from the lever a, Works theheadf2 of the sai pinf, bearing on the oppositelside of the upright e. IThe sawfframe g has the ordinary dovetail connection with the levera, on Whi it Works, and the said frame g'isoperated from the crankplato h by means of the connectingrod 21,. (indicated in dotiL l lines in Fig. 1,) as

is usual.

When .the hacksaw machine is not `at Work, the lever c is preserved in its raised position' by a stopepin lc, the., end of which bythe pressing of the pin inwa d is made to project into the pathof the lever a. The beltpulley Z (which .is indicatedinl dotted. lines only in Fig. 1) is .not `eyed tothe driving-shaft, but is free tol rotate thereon and is made lto drive' the shaft When the machine is started by a clutch m cn' the end of the shaft, the-parts of which are normally reserved apart by a coiled spring p. (See ig. 6.)

The startin of the` machine is effected by the turnin o the hand-leverir, situated at one side o the machine and-in front of the belt-pulley l, in to the forward position, (indicated in dotted lines in Fig.`1,) and then de`.

pressing the saW-rame-carrying lever a until Fig. 3), on the A.boss of the bell-crank lever` s occupies a notch s in thel frame. By the turning of the hand-lever 'r from its back positionl (represented in Figs. 1 and' 2) into its forward position (indicated in dotted lines Fig. 1) the vboss of the bell-crank lever s-is partially rotated on the shaft d and the projection s2 brought out of its notch s', as is represented in Fig. 3. By this action the driving-belt pulley l and movable part of the clutch m in one iece with vthe pulley l are forced laterally ailing the shaft d against the action of the coiled spring p and the movable' part of the clutch made to engage with the n part of the said clutch lixed on the shaft d,

so as thereby shaft.

The machine is sto ped automatically when the saw has cut through the rod 1 or article being operated upon in the following manner: A. lever t (best seen in Figs. Sand 4) is arranged to cross the bed of the machine, so that one arm terminates under the hacksaw-frame-carrying lever a and the other end terminates under the lower arm of the bellcrank lever s. When the saw has cut-through the rod 1^, the lever aand saw-frame g drop to couple the pulley Z to the by their own weight,as is usual,- andthe sawframe lever c, coming into contact with the arm of the lever i, projecting into its path,

the saidlever tis turned infthe'direction roper for giving an Aupward motion to the lhwer'arm of the bell-crank lever s, the pro- 'ection s2 of the boss of which is brought into e with the notch s in the fixed frame lo f the machine, thereby ermitting thepulley l and movableV art l01p' the clutch m to be moved under t e action,` of the spring p into.

their idle or non-driving positions.

IA refer to partially counterbalance the weight of the lever a and saw-frame g by the t 2. lhen the 'machine isto be Worked by hand,` a winch or handle is iitted to the square j end d on the shaft d.

For fixingthe rod or article to be operated upon on the bed or table of the machine I -'provide the table with the usual fixed verti- 1 Acal Stop-plate lul vand combine therewith a slidin plate '0, which is adjusted by a horizonta screw lw, working in a screw box or hole in an upright y at the end ofthe table, the said screw being rotated by a winch or handle 2. 'n

The top of the u right y is so shaped that it acts as'a stop to- 'mit the falling motion of the saw-frame lever a, when the saw has cut through the rod 1 or article under treatment.

To facilitate the dividing of a rod.:or tube into disks or Washers or into porti onsy of equallength, I combine with the machine a gage 3, working in depending brackets 4 4, fixed at opposite sides of the machine.

Having noaT described my invention, what I claim as new, and desire to secure by Letters Patent, isl 1. In a hacksaw-machine, the combination with the machine-tablas. driving-shaft, a saw-frame-carrying levery provided with a Ilot through which the driving-shaft extends said slot ermitting the lever to work over the aft, and an upright carried by tli'e tabldaand provided with an independent axis for. said; lever, said airis being situated at the rear of the driving-shaft. i

2. In a hacksawl-machne, the combina-v tion with the table of the machine, of an op erating-shaft, a saw-frame-carrying lever, a saw-frame thereon operated from a crankplate on said shaft, a belt or driving pulley on the said shaft, a starting and stopping lever pivoted at one side of the table ofthe machine and in iront of the belt-pulley, a bell-v crank lever having the boss thereof mountedv on said shaft between the-belt-pulley and the frame of the'machine and a connecting-rod between the startin andsto ping lever and one arm of said be l-crank ever, said boss having a projection adapted to engage in a. notch in the frame when the machine is atrest.

3. .In a hacksaw-inachine, an operatingshafta bell-crank ,lever carriedjthereby, a hacksaW-frame-carrying lever, a stop mechanism, anda stop-lever having one of its arms projecting in the path of the hacksaw- .frame-carrying lever and the other of its lever, said stop-lever in connection with said hacksaW-frame-carrying lever and said bellcrank lever actuating',r ysaid stop mechanism.

. In testimony whereof I have hereunto set my hand in presence of two subscribing wit- IleSSOS.

JOSEPH HAMPTON, SENR. Witnesses: Y

RICHARD SKERRETT, ARTHUR JOHN POWELL.

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