US295289A - Assigffok - Google Patents

Description

(No Medel.) 2 Sheets-Sheet 1.

T. $OHEPPLER.

STEAM HOISTING ENGINE Patented Mar. 18, 1884.

| N V E N TO R 1 By his Attorneys,

WITNESSES:

'w s u, PETERS. Phnw kilho npher. Vhshlngtnn.

2 Sheets-Sheet 2..

(No Model.)

T. SGHEPFLER.

STEAM HOISTING ENGINE.

Patented Mar. 18; 1884.

/ 'INVENTOR;

WITNESSES:

l llnrrsn STATES rricia ATENT THEQDORE SOHEFFLER, OF PATERSN, NEW JERSEY, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO OTTO FLOHR, OF NEVARK, XEXV JERSEY, AND FRANCIS M. PIERCE, OF BROOKLYN, NEW YORK.

STEAM HOlSTlNG-ENGINE.

SPECIFICATION forming part of Letters Patent No. 295,289, dated March 18, 1884.

Application filed October 31, 1883.

To all whom it may concern.-

Be it known that I, Trrnononn SCHEFFLER, of the city of Paterson, in the State of New Jersey, one of the Unit-ed States of America, haveinvcnted certain new and useful Improvements in Steam Engines, of which the follow ing is a specification.

This invention has reference to stationary engines, and isparticularly designed as a hoisting-engine. The men who operate hoistingengincs usually possess but a low grade of mechanical skill, and on this account it is highly desirablethat such engines shall be of such plain and simple construction as will give the least trouble and require the least skill and attention to run them and take care of them.

The object of my inventionis to so improve and simplify the construction of the frame and immobile parts of the engine as to attain this result. 7

Figure l of the accompanying drawings is a side elevation of myimproved engine,with all its parts complete for use. Fig. 2 is a similar view of thefraine alone, the moving parts having been removed. Fig. 3 is a plan of the engine-frame shown in Fig. 2; and Fig. 4 is a transverse section through the cross head guides,as denotedby thcline'd elin Figs. 2 andS.

Referring to these drawings, let A designate the longitudinal frame of the engine, B the steam-cylinder, G the crank shaft bearing, and D the valve-chest.

In Fig. 1, E is the cross-head on the pistonrod; F, the pitman; G, the crank-wheel; H, the crank-shaft, and I the winding-drum, which is geared to the shaft- H by a gear-wheeluand pinion, the pitch-lines of which are shown at Z) c. J is the foot--lever, operating the strapbrake on the wincling-drun1,to control the lowering of loads. K is the valve-rod, and K the connectingrod by which it is connectedto the upper arm of the rock-shaft L, which has bearings in the frame A, and the lower arm of which connects to the eccentricstrap. The eccentric is not shown, but is arranged just behind the crank-wheel G.

As seen in Figs. 2- and 3, the frame A is cast in one piece, with the cylinder 18 and steamchest 1) at one end, and has the crank-shaft (No model.)

bearing 0 formed in it at the other end. It consists of a straight flat plate strengthened by suitaloleflanges, an. The crosshead guides M M are also cast on the frame A, whereby they form one piece with the cylinder. The liner ac is the axial line of the engine. frame has been cast, the boring-bar is centered on this line and the cylinder is bored out,and with the bar on the same center the cross-head guides M M are bored out. Thus the crosshead guides have concave faces, as shown in Fig. 4, being segments of a cylinder the axis of which coincides with that of the cylinder B. This construction insures the correct alignment of the cylinder and guides with but little trouble and the exercise of but aslight degree of skill.

The steam-chest- D is cast in one piece with the cylinder, and is cylindrical internally for the reception of piston-valves fixed on the valve-stein K. Fig. 3, and the steam flows thence in opposite directions through a cored-out part, and enters the opposite ends of the steam-chest, thus pressing on opposite sides of both valves and 1 balancing them. The exhaust escapes into the middle of the steanrchest, which is tapped by the exhaust-pipe at e. The axis of the steam-chest is on the lincy g in Fig. 2, whichis directly over and parallel with the axis x Thus the correct boring of the steam-chest is facilitated.

By casting the cylinder-frame and guides in one piece not only is the engine greatly sinr plified and its cost of construction considen bly reduced, but it possesses greater rigidity and strength than when made of several pieces bolt ed together; there is no possibility of the parts getting out of line; the necessity for repairs is reduced to a minimum, and but little skill is required to operate the engine.

The drawings show one-half of a double on giue, (of which the medial line is at z z. Fig. 3,) the two frames being connect-ed together at their cylinder ends by a cross-frame, P, to which they are bolted, and at their crank-shaft endsby across-tie,Q,. \Vhen aboileris mounted with the engine, the frame 3? is made of such shape as to form the boiler foundation Nhen the p The steam-pipe enters at (l,

and ash-pit. If it is desiredto make a singleoylinder engine, one frame is cast, as shown, to form the engine-frame, and the other frame is cast without cylinder or guides.

The crank-shaft bearing F consists of a hub bored longer than the shaft and fitted with bushes. It is best to fit each endwith a bush and the intermediate space with anti-friction metal, as this saves expense in the original fitting, and facilitates truing the bearings when the bushes become worn, it being then only necessary to remove and renew the bushes. The bearings for the shaft of the drum I should be hushed through their whole length.

I am aware that guides have been cast to an engine frame when the cylinder has been cast separately and bolted on and the guides dressed out by planing. My invention, however, possesses distinctive practical advantages over that construction.

I claim as my invention 1. The combination of steam-cylinder.and cross-head guides, both cast in one piece, the cross-head guides being bored cylindrically tially as and for the purposes set forth.

2. In a steam-engine, the combination of the engine -frame, the crank -shaft bearing, the

THEODORE SOHEFFLER.

Witnesses:

ARTHUR O. FRASER, HENRY CoNNET'r.

from the same axis as the cylinder, substansteam-c'ylinder, and the cross-head guides, all

Images