US424869A

US424869A - Elevator

Info

Publication number: US424869A
Authority: US
Publication date: 1890-04-01
Anticipated expiration: 1907-04-01

Description

(No Model.) 2 Sheets-Sheet 1.

s. 0. EVANS.,

BLEVATR..

(No Model.) '2 sheets-sheet 2.

S. C. EVANS.

ELBVATOR.

No. 424,869. Patented Apr. 1.1890.

N. PETERS. Phumuibqgnphur. wmnington. llc.

UNITED vSTATES PATENT OFFICE.

SAMUEL C. EVANS, OF CLEVELAND, OI'IIO.

E L EVATO R.

SPECIFICATION forming part 0f Letters Patent No. 424,869, dated April 1, 1890.

Application filed August 1, 1889.

To all whom it may concern:

Be it known that I, SAMUEL C. EVANS, of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Elevators; and I do hereby declare the following to be a full, clear, and exact description. ot' theinvention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in safety attachments for elevators, the same comprising a series of suspended hatches for closing the elevatorshat't at the different floors above and below the elevator, such hatches being automatically operated by the elevator..

In the accompanying drawings, Figure l is a view in perspective. Fig. 2 is an elevation in section. Fig. 3 is an enlarged elevation in section in detail. y

A represents an elevator-car, and A the hoisting-cable for the same, these. members being of ordinary construction, and about any variety of elevator will answer the purpose.

B, C, and D represent dierent floors of the building through which the car passes.

C D are hatches located above the car for closing the elevator-shatt at the different floors above the car. C2 and B2v are-similar hatches for closing the elevator-shaft at the respective iioors below the car. The hatches above the car are suspended by chains or rods b l), 'the same being attached to the framework above and extending loosely through holes located near the corn ers ofthe elevatorplatform. The rods or chains (and we will suppose the latter) l) have each attached a series of balls h b2 b3, these balls being respectively located opposite the different floors, these balls being graduated in size, the larger ball being the lower one of the series. Thimbles c, d, and e are set in the different hatches that are above the car, thimble c being adapted to engage the larger ball b', but the bore of this thimble being large enough to pass the smaller balls located above. Thimble d is adapted to engage ball h2, and so on throughout the series, each set of thimbles being adapted to engage the corresponding balls and the balls above being of such size as will pass through the thimbles below.

In operating the device, suppose the car to seria No. 319,398. (No moda.)

be at floor B, in which position of the car the different hatches CD will be in position suspended, respectively, opposite the different iioors C D. The car in moving upward 'first engages hatch C', carrying it up, and this hatch in turn engages the next hatch above, and so on until the car reaches the upper floor, the hatches above the car all resting thereon. .lVith the descent of the car the thimbles of hatch D will engage balls b3 and arrest this hatch opposite floor D.V Next the thimbles of hatch C will engage balls h2 and suspend this hatch opposite floor C, and so on, the elevatorshaft being successively closed at the different floors above the car. The hatches B2 C2, below the elevator, are operated by chains a, fastened to the under side of the car, these chains each having attached a series of balls, respectively a a2, for engaging corresponding thimbles in the different hatches B2 C2, arranged as aforesaid. lVith the car at floorB the lower set of hatches will be piled below, as shown. As the car moves upward balls a will engage the thimbles of hatch B2 and carry this hatch up ush with floor B, reaching this point as the elevator-platform reaches ioor C. Vthen the car is raised to door D, hatch B2 willbe brought in line with floor C, and hatch O2 will be elevated to floor B, and so on. K On the descent of the car the lower series ot hatches willbe correspondingly depressed and successively close the elevator-shaft opposite the di tterent floors, these lower hatches being eventually piled at the starting-place when the car shall have reached the bottom tloor.

Pockets F, constructed, preferably, of short sections of large tubing, receive chains a and the connected balls, and weightsb4 are attached to the lower end of chains b to hold these chains taut. In case rods are substituted for chains l), of course such weights can be dispensed with. As shown in Fig. 3, the different balls have screw-threaded holes engaging short pieces of screw-threaded rods t', these rods having eyes or hooks at the -ends for connecting them with the chains, of which th ey are made to form a part. Vith such construction the balls may be adj usted with little trouble to bring the different hatches flush with the different floors, and the rods had better have j ain-nuts 'i' for holding the balls in such adjustment.

IOO

rlhe apparatus herein described is not only valuable as a safety attachment, whereby the elevateisliaft is closed at the different tleers above and below the elevator, but the hatchesr may tit the floors se closely as practically to prevent a draft of air through the elevatorshaft, and this in case of lire will. beteund of great value.

The hatches may be constructed et sheet metal er other suitable material, and if the hatches are constructed of wood at least the under side ef the hatches had better be covered with asbestus or some lire-prooi material.

l. rlhe combination, with anv elevator-shaft and an elevator-ear suspended therein, of chains suspended from the top et the shaft and extending te the bottom thereof, a series et balls of varying' sizes secured te said chains, a series olf hatches above the car, supported by said balls, chains suspended from the car, balls of varying' sizes secured thereto, and hatches below the ear, supported by said lastmentioned balls, substantially as set i'erth.

2. The combination, with an. elevater-shaft and an elevator-car therein, et chains suspended from the top of the shaft and extending to the betteln thereof, balls adjustablysecured te said chains, hatches above the ear, supported by said adjustablelmlls, chains suspended from the car, adjustable balls therein, and hatches below the car, supported by the last-men tion ed ad justableballs, substantially as set t'erth.

The combination,with an elevator-shalt; and an elevator-car therein, et chains suspended from the top et the shaft and extending,` through perforatiens in the car to the betteln et the shaft, hatches above and below the car, having' perferatiens tor the passage of said chains, chains suspended from the ear and passing through a second set et perferatiens in thc hatches below the car, balls ef varying sizes secured te each ef said chains, and thiinbles secured inthe perferatiens et the hatches, such thimbles being,` respectively adapted te engage a corresponding,r ball, and thus support the hatches at the proper points, substantially as set forth.

4. The combination, with the elevator-shaft and an elevator-cfu.` therein, ef chains suspended from the top et the elevator-shaft and frein the car, balls of varying,1 sizes secured te said chains, hatches supported by said balls, and pockets secured in the bottom of the ele vater-shaft t'er receiving the chains when the ear is lowered, substantially as set forth.

5. The eombinatiomwith suspended hatches and chains and balls for operating` the saine, substantially as indicated, et screw-threaded lreds engaging' screw-threaded holes in the respective balls, such reds having appliances at the ends thereof ter attaching the reds in the line et the chains, substantially as set; forth.

In testimony whereof I sign this specification, inthe presence of two witnesses, this 6th day of July, 1889.

SAMUEL (i. EVANS.

\Vitnesscs:

(Juas. Il. Donna, WILL 13. Saou.