US1010690A - Reflecting-mirror for locomotives. - Google Patents

Description

APPLIGATION FILED JULY 20, 19101 Patented 1160.5, 1911.

2 SHEET$-SHEET 1.

M. '11. S01 BOROUGH.

REFLEOTING- MIRROR FOR LOCOMOTIVES,

APPLICATION FILED JULY 2-0, 1910.

Patented Dec. 5, 1911 Swuwtoz Z SHEETSSHEET 24 MARY nmzannrn scannon ooen, or OKLAHOMA, o La'HomA.

an'rnncrmsrmnaon son Locomo'rrvns.

Specification of Letters Patent.

, Application filed July 20, 1910. Serial No. 572,840., a

To all whom it may concern:

Be it known that I, MARY ELIZABETH Su-uuzonouon, a citizen of the United States, residing at Oklahoma, in the county of Okla- 5 homo and State -of Oklahoma, have invented certain new and useful Improvements in Reflecting-,Mirrors for Locomotives, of which the following is a specification.

My invention is a device for showing obstructions or defects on arail-road track to the engineer or other operator in -the cab, and consists in a reflector hinged-on the outside of the cab oppositeone of the side' windows with means of ,changin the angle of th'e reflector to catch and're ect the obstruction or defecton' or in the'rail road ahead of the engine and of an inside re- -flector with means for changin so as to throw the reflected rays ack to the engineer. v

In the accompanying drawings? Figure lis a top planview, of an engine and its cab, the top removed, an'd a portion of a straight railway track, also 'showingthe ositions of therefiectors; Fig. 2 is a top p an view of an' engine and its cab, the/top removed,

and a portion of a curved rail way track,

also showing the positions'of the reflectors.

' Fig. 3 is a detail "view showing the inside 80.reflector with means for changing its an le and holding the same at a eslred angle. Fig. 4 is a detail view showing the means by which the reflectors are hinged and their angles chan d. Fig. 5 is, a view showing one of the rent doors of the cab with the inside reflector hinged above the door.

In view of the many accidents which oc-' cur on rail roads arising from obstructions and defects on the track ahead of the engine and in view of the fact that the front door of the engineers cab is small and. nearly always clouded more or less with a dust and vapor, ,whereby the engineer is prevented from seeing clearly ahead of the 46 en no; and therefore, many times unavoidab y running into obstructions and defects in the road, this invention was conceived for the prevention, as far as possible, of such accidents and-relief of persons": sufi'erin therefrom. t. v

y invention is described as follows! The numeral v 1 represents a rail way track,

2' a'locoinotive or steam engine, 3 the boiler,- 4- the cab, 5 a reflector hinged to the outside of the right-hand wall gf the cab, 6 the arm to whic I said reflector is hinged, 7

its angle screws or bolts by which the arm is secured to the rear wall 8, cf-the cab; 9 represents the inside reflector, 10 a hinge by which it is lunged above the front door of the cab;

-11 represents a coil spring by'means of wvlnch the-free end of the inside reflector 9, isdrawn back to the front wall of the the free end of the inside reflector and passng over a pulley 13, immediately or nearly immediately over the seat 14, of the engineerjthe cord extends a little below said pulley and by'mcans of a ring 15, has'attached'to it a rod 16, provided with a hand hold 17. This rod passes through a keeper 18, having secured therein a spring 19, which, by means of friction, holds said rod position and thereby. also holds said refiector ,9, at the angle desired. 1 Extending from the inneredge of the reflector'5, is a spring arm 20, which passes into the inside of the cab and rides on a corrugatnd graduated scale 21, horizontally and rigidl secured on the inside of the cab and imme iately op osite the window, near which the outsuib reflector is secured, and on a line with the sill of the window by which the reflector 5, may be secured at any angle at which it is placed. The upper edge of the inside reflector 9, may be inclined slightly forward so as to throw the refiection down when the engineer is in a. sitting position.

'The operation of this invention may be readily understood. First,'we must understand that the angle of reflection is exactly the same as the angle of incidence. Now,

Patented bee. 5, 1911..

' cab; 12 shows part of 'a'cord attached to for the purpose of explanation, we will first 4 observe that the object or defect of the road may be at the circle a, the beam of light 6 me. be called the incident beam, and strikes t e reflector v5, at an angle of about 10 degrees to the right, and then it is immediately reflected to the inner reflector 9, at an angle of about 10 degrees to the left and in this respect it becomes the incident ray 0 and then it is reflected back to the engineer at his seat 14, and becomes the reflected ray (1. l

. .Now,by observing the diagram Fig. 2, we will see that the, railroadltracir is represented as curved to the right; this causes the beam of light b to strike the reflector of the reflector slightly in order to throw the beam of lightat the same point on the reflector 9, in Fig. 1, or 1 may let it stand at the angle at which it is placed andtlet the beam of light 0 strike the reflector a little to the left of'the center, in which case I mightvhave to operate the rod 16, and thereby slightly change the angle of the reflector 9, so as to throw-the reflected ray (1 to the engineer, but practically it scarcely ever will become necessary to change either one of the reflectors, because the reflector 5, will take in a great sweep of the scenery in front and reflect it to the -inner reflector 9, and itin turn will reflect it to the engineer, but whenever it becomes necessary, by a g eat curve in the road or other cause, I can shift the angles of the reflectors take in any point ahead desired.

I have only shown the reflectors placed in one side of the cab; a twin device may he placed in the other side of the cab it desired,

but such a necessity will scarcely arise because if the rellector 5, be placed near the top of the cab it will look over the top of the engine and take in scenery not only in front but on each side ofthe road.

Having described .my invention what I. claim as new anddesire to secure by Letters Patent, is:

1. In combination with the cab 0 a locomotive engine, an arm (it-secured to the rear right hand corner of the cab of said engine, a reflector 5, hinged to said arm on the outside ofithe right hand wall. of said cab and near one of its windows, a graduated scale 21, horizontally and rigidly secured on the inside of said cab and near said window, a spring arm 20, secured to said reflector and extending therefrom into said cal) and riding on said graduated scale, said reflector adapted to throw rays of light into the cab, and a reflector 9, situated in said cab and hinged to the front wall thereof, and adapted to receive the reflected rays from said reflector 5, and means for adjusliugthe angular positions of said rellee tors to throw said rays to the engineers seat in the cab, substantially as shown and described.

2. in combination with a railway cab, an outside reflector hinged on the outside otsaid cab near one of its windows, and an inside reflector hinged against the inside of the wall of said cab, said outside reflector adapted to collect the rays in front of the engine and reflect theni to the inside relleelor said inside reflector adapted to collect said rays and reflect them to the engineers seat with n'leans for adjusting the angular position of each of said reflectors, substantially as shown and described.

In testimony whereof I allix my signature in presence of two witnesses.

MARY llhlZAllE'lll SCARBOROUGH.-

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