US300258A

US300258A - hoben

Info

Publication number: US300258A
Authority: US
Publication date: 1884-06-10
Anticipated expiration: 1901-06-10

Description

(No Model.) 2 Sheets-Sheet 1.

M. W. HOREN.

ELEVATUR. No. 800,258. A Patented June l0, 1884.v

N'. N E; l

.4... @gw UM n 2 Sheets-Sheet 2.

(No Model.)

M. W. HOREN.

`BLEVMOR. No. 300,258. Pate-ntedJune 10, 1884.

UNITED STATES PATENT @Triton MARTIX XV. HOBEN, OF COHOES, NEWT YORK.

ELEVATO R.

SPECIFICATION forming part of Letters Patent N0. 300,258, dated .Tune l0, 1884.

Application tiled March 27, 1894. (No model.)

To a-ZZ whom, t may concern:

Be it known that l, MARTIN W. Homan, a citizen of the United States, residing at Gohoes, county of Albany, State of New York, have invented a new and useful Improvement in Elevators, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification. Y

My invention relates to that class of elevators employed in buildings or mines in which a pendent cab, cage, or platform, attached to the lower extremityof a rope, is raised or lowered between suitable guides from door to floor, or from level to level.

I My invention consists of certain details of construction, hereinafter described.

In the drawings, Figure l is an elevation of the cage, in which a c are the vertical guiderails, b b the safety-racks, and c the rope or cable. Fig. 2, is an under side view of the parts shown in Fig. l. Fig. 3 is a transverse vertical section of crosshead d and stirrupguide plates c, taken on the line y i/ in Fig. l, showing the sliding rope stirrup, link, or

coupling f in elevation, attached to the ropev or cable c, and carrying the cross bolt or stud g. Fig. 4: is a face view of the stirrup-guide plates c, and Fig. 5 is an end view of the same. Figs. 6, 7, and S are respectively end and side views of the springcatch bolts 7L nd guide 1l. Fig. 9 is a plan of the hinged hatch j and of a part of the automatic devices for opening and closing the same. Fig. 10 is a front elevation of the automatic devices for opening and closing the door, and Fig. 11 is a plan of a part of the devices shown in Fig. 10.

A is a rectangular frame, consisting of two uprights, Ic, a crosshead, d, and a lower crosspiece, m, so rconstructed and fastened to each other as to secure a maximum of strength and stiffness with a minimum of weight and bulk. The rope or cable terminates in a stub-end piece, n, to which the sliding rope stirrup is secured by a bolt, o; or the stirrup may be attached to the rope in any suitable manner. The stirrup incloses the cross-head at or near the center of its length, slips freely up and down for a sufficient distance, and is guided by a plate, e, on each side. Upon the cross bolt or stud g rest the extremities of the upper arms of the bell-cranks Z. The bell-cranks are suitably hinged above the cross-head to hinges or fulcrums p. The lower arms of the bell-cranks pass down through slots in the 5 5 cross-head, and connect with the ends of the spring-catch bolts 7a. The spring-catch bolts pass through the guides t' and through suitable guide-slots or openings in the uprights l: and guide-jaws q and r, and engage the teeth 6o of the safety-racks b. Between the collar s of the catch-bolts and the guide t' a stout spiral spring, t, is placed and partially compressed. Vhen the rope isdrawn upward, the bolt g, by lifting the upper arms of the bell-cranks, com- 6 5 municates motion through the bell-cranks to the clutch-bolts drawing them clear of the safety-rack teeth. The stirrup, link, or coup ling, bringing up against the under side of the cross-head, lifts the cage. Should the up- 7o ward pull of the rope cease, the stirrups will drop until the cross-bolt g rests upon the crosshead d, and the compressed spiral springs t will instantly force out the bolts 7L, causing them to catch the teeth of the safety-rack and prevent the cage from descending. The object of this part of my invention is to secure a more positive combination of devices than are in general use for the automatic working of the spring-catch bolts. The rope stirrup, link, or coupling f may have any form, and be guided in any manner suitable for the work herein designed to it.4

B is the platform resting upon the upper face of the lower cross-piece, m.. The platform is formed of two layers of planking crossing eachother at or nearly at right angles, well bolted together with two bolts to each crossing, as indicated by the dots in Fig. 2. For this purpose l prefer to use carriage bolts 7 with the heads above and the nuts below. In the cage shown in the drawings the frame A is of wood, well stiifened with iron corner-pieces a, and strengthened with two or more cross-bolts, t. In order to have unimpeded access to the platform, the uprights `a are made sufiiciently stiff and the platform is braced entirely from below. To facilitate such bracing,the lower cross-piece, in, is made comparatively thin and deep. The upper corners of the lower cross-piece are out away, as shown in the drawings, to lighten it and to ICO make room for the corner-pieces u. The uprights 7c extend well down below the platform and below the cross-piece m, and the outer corners of the platform are supported by braces fw, proceeding from near the lower extremities of the uprights. To still further stiffen and support the platform, I employ a truss formed of a transverse beam, let into the lower' cross piece, and two braces, y, proceeding from near the lower edge of the lower crosspiece and terminating near the edge of the transverse beam. VThe diagonal line or axis of the platform crosses the center line of the lower cross-bar at such an angle that the corners of the platform are thrown a few inches out of and to opposite sides of the latter line. (See line x x, Fig. 2.) This I do in order that the edge z of the hinged hatch j may, in opening and closing, more readily clear the guiderail. In order still more to increase the clearance of the edge z from the guide-rail, I employ guide-jaws q and r, which project unequally from the uprights, the wider or more projecting guide-jaws q being on the side of the edge z,- as shown in the drawings.

C is a hatchway or opening in a floor through which the elevator-cage passes.

D is a steel plate secured to the post E by bolts F. Studs G and H of the stud-plates carry, respectively, the segment-lever I, pinion J, and'drum K. The. drum is fast to and moves with the pinion. The outer end of the segment-lever carries a presser-wheel L. The chain M forms a flexible connection. between the drum K, and the hatch or door j, passing around the guide-sheave N. l

O is the presser-rod, attached above to the cross -head d, and below to the lower crosspiece,-m, of the cage A. If the cage ascends from below the closed hatch, the presser pressing against the door forces it open, and the presser-wheel drops, bringing down the end of the segment-leventhe segment the while causing the pinion to revolve7 revolving the drum with it, the chain winding upon the drum. The presser-rod pressing on the presser-wheel in passing forces the parts intoy the position shown in` Fig. 10, and holds them there until the cage has passed up out of the way, when the weight of the 'hatch causes it to close, unwinding the chain, and through the pinion and segment throws the segmentlever into a horizontal position, as shown in Fig. 9. Vhen the cage descends again, the

presser-rod pushes the segment-lever down again into the position shown in Fig. l0, opening the hatch to allow the cage to pass. By substituting a segment, pinion, and drum for the cams heretofore used for automatically working elevator-hatchways, an economy of space is effected, and my invention can be so y varied in its details as to accommodate it to many circumstances and places where the cams of necessarily larger radius could not be used.

Ido not conne myself to the use of spurgear, because it may frequently be convenient to use a bevel or miter segment and pinion. Neither do I confine Vmyself to the use of a drum with a spiral groove for winding up the chain, rope, or other iiexible connection employed, because with a iiat rope no grooves would be required and .the spiral grooves are not necessary if the drum is properly flanged even for a round rope or chain. Nor is a spiral groove necessary when not more than one turn of the drum is required to wind up the rope. The drum K in the latter case would be simply a grooved pulley or sheave.

If necessary or desirable, a horizontal shaft revolving in suitable bea-rings maybe employed with a drum, K, on each end, with two chains or ropes instead of one connecting with f the hatch, and the pinion J may be placed between the two drums.

The automatic hatchway-opening mechanism hereinabove described, and shown in the drawings, but not claimed, will be made the subject-matter of a separate new application.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The combination of the safety-racks b, with the suitably-guided and sliding spring catch -bolts h, spiral springs t,- surrounding said bolts, and the bell-cranks l, operated by the cross-bolt or stud g of the sliding rope stirrup, link, or coupling f, substantially as described.

2. An elevator-cage consisting of a suitable and suitably-guided rectangular frame, A, carrying a diagonally-placed platform, B, resting on the lower cross-piece, m, ofthe frame A, the outer corners of the platform B being rigidly supported from below by iron braces w, secured theretoand proceeding from near the lowerl extremities of the projecting uprights k, substantially as described. j

3. An elevator-cage consisting of a suitable and suitably-guided rectangular frame, A, .carrying `a diagonally-placed platform, B, resting on the lower cross-piece, m, of the frame A, the outer corners of the platform being rigidly supported from below by Viron braces w, secured thereto and proceeding from near the lower extremities of the projecting uprights k,

Vthe platform B being further supported from below and stiffened by a truss formed of a transverse beam, x, let into the lower crosspiece, m, and of two braces, y, proceeding from near the lower edge of the lower cross- IIO piece, m, andterminating neai2 the ends of proceeding` from near the lower extremities of and sr1itablyguicled rectangular frame, A,

the projecting uprights L, as described. carrying` a diagonally-placed platform, B, in 15 5. An elevator-cage consisting of a suitable which the guide-jawsqand r proj eet unequally 5 and suitably-guided rectangular frame, A, from the uprights 7, in a manner substantially carrying` a diagonally-placed platform, B, so as described.

arranged within Said rectangular frame that In testimony whereof I have hereunto Set my the projecting corners ofthe platform will be hand this 22d day of March', A. D. 1884.

thrown upon opposite sides of a line crossing MARTIN XV. HOBEN. 1o the lower har, m, of the rectangular frame I Vitnesses:

centrally of its length, and at right angles JOHN MGCREARY,

thereto, substantially as described. l DAVID R. SMITH.

below by iron braces 20, secured thereto and l 6. An elevator-cage consisting of a suitable E i