US503188A - young - Google Patents

Description

(No Model. 2 Sheets-Sheet 1.

- D. T. & H. W. YOUNG.

BOLT POROER .Patehted Aug. 15, 1893.

(No Model.) 2 Sheets-Sheet 2. D. T. & H. W. YOUNG;

BOLT PORGBR. No. 503,188. 7 Patented Aug. 15,1893.

03.5, I Fm. 41/52 m7 U ITED STATES PATENT OFFICE.

DAVID THOMAS YOUNG AND HARRY WILLIAM YOUNG, OF BIRMINGHAM. ENGLAND.

BOYLT-FORCER.

SPECIFICATION forming part of Letters Patent No. 503,188, dated August 15, 1893.

Application filed November 10, 1892. Serial No. 451,543. (No model.) Patented in England June 26, 1891, No. 10,884, and in Germany December 14, 1891, No. 65,593.

To all whom it may concern:

Be it known that we, DAVID THOMAS YOUNG and HARRY WILLIAM YOUNG, citizens of Great Britain,residingatBi1-mingham,in the county of Warwick, England, have invented certain new and useful Improvements in Bolt-Forcers and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Patents for this invention have been granted to us in Great Britain, No. 10,884, dated J une 26, 1891, and in Germany dated December 14, 1891, No. 65,593.

Our invention relates to the manner in which we construct and arrange hydraulic jacks and hydraulic forcing appliances, particularly applicable for forcing out bolts and pins from couplings of shafts, and relates principally to the improved manner in which we arrange the fittings and parts of jacks, whereby a blow or shock can be communicated to the bolt or pin while under the pressure from the hydraulic ram or forcing head of our jack or appliance. By this additional introduction of a blow or sudden shock we are enabled to give the bolt key or pin a starting move in a manner more likely to cause its ejectment from the coupling shaft or other shaft than is at present possible with the simple thrust or steady push given from and by the ram or head alone;

In carrying our invention into effect in one manner we construct the bolt forcing jack or appliance as set forth in the accompanying sheet of explanatory drawings in which-- Figure 1 is a front elevation; Fig. 2 an end elevation with the cistern shown in section; Fig. 3 a vertical section through the ram and v cistern, and Fig. 4 a sectional plan through the cylinder with the ram removed, while Fig. 5 is a detail elevation of our solid ram.

The ram A of our hydraulic jack we arrange with projecting tails or stems A, A whichpass through the end of the hydraulic cylinder and its gland cover K sufficiently to permit of the tail A when solid being struck with a hammer or other instrument even when the ram has made its full inner stroke. The cylinder B we cast or mount at right angles to the pump cistern 0 or in any other suitable position so that the ram and its tails have free movement in the direction of the center line of the bolt, shaft spindle or pin which is to be operated upon. The inner-portion of the ram tail A forms with the body of the ram A an annular space B for the liquid under pressure from the pump E to work in, a suitable leather or other cup or ring a being provided to keep the liquid from escaping, and a similar ring, or gland and packing It being arranged for the tail rod or end A to work through. The outer head or face of the ram when solid as shown on Fig. 5 We shape to suit the head of the bolt or pin or we curve it slightly for the better transmission of the pressure.

. The cistern 0, cover D, release stop H and the pump piston F we construct in any usual or ordinary manner, and we work the pump by means of any ordinary hand lever upon the spindle G. We arrange detachable claws, legs or arms N, N on the hydraulic cylinder and cistern so that it may be in the most convenient position for working upon a bolt or shaft; and we tie the legs or supports together by means of distance bolts 0, O, and secure them to the body of the cylinder by providing jaws N, N to fit and be pinned on to lugs or projections B by means of pins n.

We sometimes cast or form the claws, legs or arms in one piece with or solid with the body or cylinder A, and we vary the shape of such solid legs or claws to suit any particular requirement.

By another arrangement of our thrusting ram we obviate the shock to the ram itself when communicating a blow to the pin or shaft which is being operated upon, by constructing our ram A, A, A of a tubular or hollow form as illustrated in Fig. 3, so that a drift or other rod L with or Without a cap or cover M may be placed through the length of the hollow ram to meet the bolt or pin, and a blow given to the outer end of this drift for starting the pin, bolt or shaft from its tight position.

Instead of carrying our separate striking or starting drift rod L right through the entire length of our ram A, A, A we sometimes cause the drift rod to enter a hole formed within one tail red A and to communicate its blow to the ram by striking the solid end or bottom of the hole formed within the tail rod of the ram.

We do not limit the application of our hollow ram or projecting tail ram to the particular arrangements of arms and cistern and pump fittings hereinbefore described but we employ our improved rams and cylinders to work with any ordinary kind of forked supporting frame or arrangement of claw supports, with similar advantage, for the purpose of permitting of the application of a blow or shock in addition to the ordinary thrust of the hydraulic jack or other hydraulic forcing appliances.

The frame N is always in two parts, or is forked, or bifurcated, so as to clear the head of the bolt which comes between the two hooks 2 which bear against the face of the coupling while the end M of the stem presses on the end of the bolt and forces it out of the hole in the coupling.

What we claim is l. A portable bolt forcer, comprising a hooked frame adapted to engage with the coupling flange, a hydraulic cylinder secured to the frame, a piston provided with a stem projecting through the upper end of the cylinder, and a pump secured against the side of the cylinder clear of the said stem,wherebya blow may be delivered on the center line of the said stem and piston to start the bolt while under hydraulic pressure.

2. The combination, with a bifurcated frame, of a hyd raulic cylinder, a piston Working in the cylinder and provided with a tubular piston rod, and a stem passing through the said rod, substantially as and for the purpose set forth.

3. The combination, with the hydraulic cylinder provided with rectangular projecting lugs, of the bifurcated frame provided with jaws adapted to engage with the said lugs, and the retractibie pins for connecting the said frame and lugs, substantially as set forth.

In testimonywhereof we affix on r signatures in presence of two witnesses.

DAVID THOMAS YOUNG. HARRY WILLIAM YOUNG. \Vitnesscs:

WILLIAM EVANS, ALBERT EDWARD PARKER.

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