US619400A

US619400A - John e

Info

Publication number: US619400A
Authority: US
Publication date: 1899-02-14
Anticipated expiration: 1916-02-14

Description

No. s|9,4oo. Patented Feb. |4, |899. .1. E. w. FoGAL. ELEVATOB GATE.

(Application led Apr. 27, 1898.)

o rnc Suf@ No. 6l9,400. Patented Feb. I4, |899.

J. E. W. FOGAL.

EL-EVATUR GATE.

(Application filed Apr. 27, 189B.) (Nu Model.) 2V Sheets-*Sheet 2.

NITED STATES PATENT OFFICE.

JOHN E. W. FOGAL, OF QUINOY, ILLINOIS, ASSIGNOR OF ONE-HALF TO JOHN O. DUSSAIR AND HENRY B. DINES, OF SAME PLACE.

ELEVATOR-GATE.

SPECIFICATION forming part of Letters Patent No. 619,400, dated February 14, 1899.

Application led April 27, 1898.

To all whom t may concern:

Be it known thatI, JOHN E. W. FOGAL, a citizen of the United States, residing at Quincy, in the county of Adams and State of Illinois, have invented a new and useful Elevator-Gate, of which the following is a speciiication.

My invention relates to elevators, and particularly to operating mechanism for elevator-gates, and has for its object to provide simple and efficient means adapted to be applied to elevators of any ordinary construction whereby the gates are successively opened and closed as the car approaches and leaves landing.

Further objects and advantages of this invention will appear in the following description, and the novel features thereof will be particularly pointed out in the appended claims.

In the drawings, Figure 1 is a perspective view of an elevator-gate-operating mechanism constructed in accordance with my invention applied in an operative position to an elevator. Fig. 2 is a perspective View of the friction-bars and support. Fig. 3 is a similar view of the sheave and friction-roller, with the bracket upon which they are mounted. Fig. 4 is a detail sectional view of the means for guiding the friction-bar and adjusting the tension of its actuating-spring. Fig. 5 is a plan View of the means for securing the upper end of the friction-bar support to the car.

Similar numerals of reference indicate corresponding parts in all the figures of the drawings.

In the drawings my improved elevator-gateoperating mechanism is shown applied to a freight-elevator wherein the car is provided with a platform 1, a transverse beam 2, and uprights 3, an elevating-cable 4 being ernployed, and said car is mounted between guidebeams 5, while access to the car is had between vertical gate-guides 6, between which is mounted to slide a gate 7.

The attachment constituting the gate-operating mechanism includes a support 8, consisting in the construction illustrated of a board or its equivalent secured at its lower end to the car-platform and at its upper end to the beam 2 by means of suitable braces 9 Serial No, 678,966. (No model.)

and 10 or'the equivalents thereof, and mounted upon this upright support for horizontal yielding movement are upper and lower friction-

bars

11 and 12, arranged in parallel positions, respectively, contiguous to the front and rear edges of the support 8, and hence with an interval between the planes of their contiguous faces or edges approximatelyequal to the diameter of a friction-roller 13, which is mounted in fixed bearings, preferably upon the frame or an attached part of the elevatorshaft. In the construction illustrated the friction-roller 13 has its spindle 14 mounted in bearings in a bracket 15, which is secured to a horizontall bar 16 of the elevator-shaft by means of bolts 16a or their equivalents eugaging horizontal slots 17 in the securingplate of said bracket, whereby the horizontal position of the friction-roller may be adj usted to suit the positions of the friction-bars. cured to the spindle of the friction-roller is a sheave 18, to which is attached the lower end of a gate-operating cable 19, forming a connection between said sheave and the gate 7 and extending between said sheave and gate over suitable direction-

pulleys

20, 21, and 22, the direction-pulley 2O being located above the sheave 18, the pulley 2l (shown in dotted lines) upon or contiguous to one of the gate guides or uprights 6, and the pulley 22 centrally above the gate.

The lower friction-bar 12 terminates at its upper end in the plane of the lower end of the upper bar 11, and as these bars are spaced apart horizontally to frictionally engage opposite'sides of the roller 13 it will be seen that during upward movement of the elevator-car from a point below said roller the contact of the inner edge or operative face of the upper friction-bar will cause rotation of the roller 13 to wind the gate-operating cord 19 upon the sheave 18 and raise the gate, the lower end of the upper friction-bar 11 reaching the plane of the roller 13 simultaneously with the arrangement of the car-platform in the plane of the landing, and that a further upward movement of the 'elevatori-car will cause the lower friction-bar 12 to engage the friction-roller 13, and th'us turn the latter in the opposite direction and lower the gate.

In the same way the downward movement of IOO the elevator-ear toward a landing will bring the operative face of the lower friction-bar into contact with the friction-roller 13 to turn the sheave, wind the cable 19, and elevate the gate, and that after the car-platform has passed the landing the friction-roller will be turned by the upper friction-bar in the opposite direction to unwind the cable and lower the gate.

In order that an even yielding pressure of the friction-bars may be maintained upon the periphery of the friction-roller, they are mounted at their upper and lower ends in angular guide-brackets 23, consisting in the construction illustrated of bars secured at one end to the inner surface of the support 8 and bent to form front arms 24, perpendicular to the plane of said support, and outer arms 25, which are parallel with the support and between which and the plane of the support the friction-bars are mounted to slide. In order to prevent vertical displacement of the friction-bars and limit the inward movements thereof, I employ guide-rods 2G, extended through guide-openings 27 in the perpendicular arms 24 of the guide-brackets 'and threaded or otherwise adj ustably secured to the friction-bars, said guide-pins consisting of bolts which are headed, as shown at 28, to bear against the outer surfaces of the arms 24 when the friction-bars are at the limits of their inward movement. Also to insure the proper frictional contact of the operative faces of the friction-bars with the periphery of the friction roller I employ actuatingsprings 29, preferably of the plate type, secured at their centers to the outer or remote edges of the friction-bars and deflected from the bars toward their free ends for contact with fixed objects, such as the guide-brackets. In the construction illustrated tensionscrews 30 are threaded in the perpendicular arms 24 of the guide-brackets and bear terminally against the extremities of the actuating-springs, whereby the resistance oered by the springs to the separation of the friction-bars or the movement thereof from their normal positions may be varied, thus adapting the apparatus for use in connection with gates of different weights.

It will be seen that by the use of friction devices consisting of the friction-roller and the yieldingly-supported friction-bars I am enabled to insure the efficient operation of the gate without strain upon the operative parts and without causing undue resistance to the motion of the car, and it will be understood that by employing sheaves of different diameters or friction-rollers of different diameters I am enabled to secure a movement of the gate through any distance to suit the conditions under which the apparatus is used.

It will be understood that various changes in the form, proportion, and the minor details of construction may be :resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

Ilaving described my invention, what I claim is- I. A gate-operatin g apparatus for elevators consisting of a friction-roller mounted upon the frame of the elevator-shaft and operatively connected with an elevator-gate, parallel frictionbars arranged upon opposite sides of said friction-roller for alternate contact with opposite sides thereof, upper and lower parallel-sided guide-brackets for each friction-bar, guide-pins carried by the friction-bars at their extremities and extending through openings in the bracket-s, and bowed plate-springs arranged at their convex centers in contact with the rear edges of the friction-bars, and disposed terminally in the said guide-brackets contiguous to the said guidepins, substantially as specified.

2. A gate-operatin g apparatus for elevators consisting of a friction-roller mounted upon the frame of the elevator-shaft and operatively connected with an elevator-gate, parallel friction -bars arranged upon opposite sides of said friction-roller for alternate contact with opposite sides thereof, upper and lower parallel-sided guide-brackets for each friction-bar, guide-pins carried by the friction -bars at their extremities and extending through openings in the brackets, bowed plate-springs arranged at their convex centers in contact with the rear edges of the friction-bars, and disposed terminally in the said guide-brackets contiguous to the said guidepins, and tension screws threaded in the brackets and bearing terminally against the extremities of said springs for varying thc tension thereof, substantially as specified.

3. A gate-operatie g apparatus for elevators, consisting of yieldingly-supported upper and lower friction-bars, spaced apart horizontally at their operative faces, a supporting-bracket secured to the frame of the elevator-shaft and having a slotted securing-plate for engagement by fastening devices, a friction-roller mounted upon said bracket for alternate contact with the operative faces of said frictionbars, and of a diameter greater than the interval between the planes of the operative faces thereof when the bars are in their normal positions, a sheave fixed to the spindle of the friction-roller, and a flexible connection between said sheave and the elevatorgate, substantially as specified.

4. Agate-operating apparatus for elevators, consisting of a friction-roller mounted upon the frame of the elevator-shaft, and operating connections between the same and an elevater-gate, an upright support provided with means for attachment to an elevator-car, pairs of parallel-sided guide-brackets secured to the said support, with their open sides disposed inwardly, toward the friction-roller, twin friction-bars mounted in said guides for horizontal movement toward and from the axis of the friction-roller, and relatively disposed to successively engage said roller at diametrically opposite points during the movement of IOO IIO

the elevator-car in opposite directions, and In testimony that I claim the foregoing as springs for yieldingly holding said frictionmy oWn I have hereto affixed my signature in bars in their normal or initial positions, said the presence of tWo Witnesses.

support, with the attached brackets and fric- JOHN E. W. FOGAL. 5 tion-bars, heine,` attachable to an elevator-ear Witnesses:

in operative relation with the friction-roller, S. H. TAYLOR,

substantially as specified. HETTIE L. SIMPSON.