US520031A - Foot-guard - Google Patents

Description

(No Model.) J. H. BLOMSHIELD.

FOOT GUARD.

51m/ventilo@ .BIOTISAII ff E,

Patented May 22, 1894.

UNITED STATES PATENT OFFICE.

JOHN I-I. BLOMSHIELD, OF WEST BAY CI'IY, MICHIGAN.

FOOT-GUARD.

SPECIFICATION forming part of Letters Patent No.520,031, dated May 22, 1894.

Application led June 8; 18931 Serial N0. 477,026. (N0 modl.)

To a/ZZ whom t may con/cern.-

Be it known that I, JOHN Il. BLoMsHIELD,

la citizen of the United States, residing at West Bay City, in the county of Bay and State of Michigan, have invented certain new and useful Improvements in Foot-Guards and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to certain new and useful improvements in frog fillings or foot guardsfor blocking frogs, switches and other cavities formed between adjacent sides of convergent rails.

The object of the invention is to provide a device of this class that shall possess advantages in point of simplicity, durability, inexpensiveness and general efficiency.

With these and other objects in View, Iemploy various novel combinations and arrangements of elements which will be hereinafter more fully set forth and specifically pointed out in the claims.

In describing the invention in detail, reference is had tothe accompanying drawings forming part of this specification wherein like letters indicate corresponding parts in the several views, in which- Figure 1:- is a view in end elevation of one form of adjustable block embodying my improvements and showing the same applied to the rails. Fig. 2 is a top plan view, showing the block closed. Fig. 3:- is a similar view, showing the block extended. Fig. 4:- is a View in vertical section, taken longitudinally of the block. Fig. 5:- is a fragmentary view in side elevation of one end of the block. Figs. 6 and 7 are transverse sectional views taken on the lines 1 2- and 8 4- respectively.

In the drawings: Rd denotes the point rail formed by the meeting ends of the inner rails -RR of the main track and switch, which are of the usual T-form, and in the angular opening formed between these rails, the footguard or frog-block is removably secured. This block consists of a base-plate -B- which terminates at one end in an apertured or notched L.-shaped foot B- through which a spike may be driven to secure the block against longitudinal movement or play, and as a means for strengthening the block to effectually withstand abnormal strainsor sudden shocks, I provide it with a centrally disposed and longitudinally extending rib -T- which may beintegral or removable, as desired. Then using the ribbed form of base-plate, I cut away portions of the rib to form openings or recesses -IIG- for the purpose of readily admitting of the insertion and passage of the securing bolts or rivets -M-M-U-E-. The last named bolt is provided with a lock-nut -F- which will be hereinafter referred to. At the extremity of the base-plate opposite the terminal footpiece, two Wings -A-A- are secured to swing horizontally about a vertical pivot-bolt -L and are provided with double headed retaining bolts or rivets -M--M- which latter are secured in apertures of the Wings and project through and work loosely in curved transverse slots of the base-plate. These wings are angular in cross section and of similar-construction,theend-fiangesC-D- being so relatively arranged as to close one over the other.

S-S- represent coincident slots which are formed in the flanges CD and through these slots the bolt -E- passes with the lock nut -F on the projecting end thereof, thus, the wings may be adj usted to any desired angle to lit snugly into angular openings of varying sizes and securely held in such adj usted position by the lock-nut, as is clearly shown in Fig. l. To prevent possible slipping of the flanges after being properly secured, as for example, when the nut works loose, the engaging faces thereof may be corrugated, milled or otherwise roughened. I do not confine myself to this particular' form of locking device for the wings, as various contrivances may be substituted therefor, such as the extensions -xof the wings, which are provided with terminal apertured or notched heads, through which spikes -7t may be driven, as shown by dotted lines, Fig. -3-.

To secure the block in position between the rails and against vertical displacement, I provide the wings with threaded openings 7a2-jinto which the screw-threaded studs -J-Je-f-KwK-are secured and proj eet later- ICD . ally, with the outer ends engaging the web of the rails at points adjacent the base-flange and head thereof.

` a-arepresent lugs or flanges on the upper faces of theY wings which are preferably formed integral therewith. These flanges are arranged so as t0 abut against the head of the rails and with the engaging faces thereof substantially at right angles to the lateral studs J-JKK-, thus effectually bracing the block against lateral movement. At the smaller end of the block a tapered plate -P- is secured and serves to completely bridge or cover the extreme point of the angular opening between the rails.

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

1. In a foot-guard, the combination with a 'base-plate, of duplicate wings mounted thereon to swing in opposite directions and means for securing thewings al any angle of adjust ment, as specified.

2. In a foot-guard, the combination with a. base-p1ate, of duplicate wings mounted thereon to swing in opposite directions, a looking device adapted for securing the wings at any angle of adjustment, and the lateral adjustable projections of the wings adapted for engaging the rails, as specified.

3. In a foot-guard Ythe combination with a base-plate having a terminal L-shaped foot and provided with suitable strengthening ribs, of duplicate Wings angular in cross section and mounted on the base-plate to swing in opposite directions, a locking device adapted for securing the wings at any angle of adjustment, the lateral adjustable studs of the wings, and the end flanges, as specified.

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

JOHN H. BLOMSHIELD.

Witnesses:

DAVID LUMGAIR, L. B. EDINBOROUGH.

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