US296594A - Sash-adjuster for railroad-cars - Google Patents

Description

(No Model.)

A. K. MANSFIELD.

SASH ADJUSTER FOR RAILROAD GARS.

Patented Apr. 8, 1884.

Inventor.

minemw' fl/Qlw f $044 UNITED. STATES PATENT OFFICE.

ALBERT K. MANSFIELD, OF BOSTON,- MASSACHUSETTS.

SASH-ADJUSTER FOR RAILROAD-CARS.

SPECIFICATION forming part of Letters Patent No. 296,594, dated April 8,1884.

Application filed December 5, 1883. (No model.)

To all whom it may concern.-

Be it known that I, ALBERT K. MANSFIELD, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented a new and use ful Improvement in Ventilator or Deck-Sash Openers for Railroad-Cars, of which the following is a specification.

My invention relates to stops or fasteners =for openers. which are used to open and close the sash in the raised roofof railroad-cars, in which the sash is pivoted and operated by means of a hanging handle permanently attached to the car.

The object of my improvement is to provide an efficient automatic stop which shall hold the sash firmly open or closed, orin any intermediate position desired. I attain this object in the manner illustrated in the accompanying drawings, in which- Figure 1 is apian of the entire opener, showing a portion of the sash to which it is connected. Fig. 2 is a side elevation of the opener; and Fig. 3, a sectional plan, showing the stop arrangement. Fig. 4 is a modification 0f the device.

Similar letters refer to the same parts throughout the different views.

A is the stand or frame of the opener; B, the sash operated by the opener, which is represented as open, and which is pivoted or hinged at its extreme end. (Not shown in the drawings.)

C is a hanging rod, holding the operatinghandle D at its lower end; E, a crank at the upper end of the rod, and F a connecting-rod between the crank and the sash.

G is a collar attached to the rod 0. This collar has depressions formed on its periphery, which engage with a follower or friction-pawl, H, which is forced against the collar by the spring J. These depressions may be either flat or of other suitable form. They are so placed as to engage with the follower H both when the sash is closed and when it is fully open, and other depressions may be made to correspond with other positions of the sash, if desired.

Instead of making the depressions referred to in the collar G, they may be made directly in the rod 0 or in the hub of the crank E; and, instead of the spiral spring and follower, a flat spring may be attached to the stand A, having'its free end so formed as to bear directly against the collar or other piece having the depressions. It is not necessary that the movement of the follower be at right angles to the axis of rotation of the collar G, for the depressions may be in the end of the collar instead of in its periphery, in which case the follower would be arranged to move parallel to the axis of the collar.

It will be seen that the action of the springstop is entirely automatic, no movement being required on the part of the person operating the opener, except to turnthe vertical rod by means of the handle in the usual manner.

I am aware that prior to my invention sashopeners have been made with vertical operating-rods combined with apparatus forholding the sash firmly in certain positions. I do not therefore claim such a combination, broadly; but 7 What I do claim as my invention, and desire to secure by Letters Patent, is

1. The combination, in a ventilator-opener, of the revolving rod 0, the crank E, and connecting-rod F, with a collar, G, (or other revolving part,) provided with depressions to engage with a follower, H, forced against the collar, all substantially as set forth.

2. In a ventilator-opener, the combination of the spring J, follower H, and the revolving collar G, with depressions, substantially as described.

ALBERT K. MANSFIELD.

Witnesses:

CHARLES P. Bosron, T. L. Mansrrnnn.

Images