US490872A - Extension-skate - Google Patents

Description

(No-Model.)

M. BLDUNBAR. EXTENSION SKATE.

NO. 490,?72. Patented Jan. 31A, 1,893.

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MARCENE B. DUN BAR, OF TORRINGTON, CONNECTICUT.

EXTENSION-SKATE.

SPECIFICATION forming part of Letters Patent No. 490,872, dated January 31, 1893.

Application filed March Z2. 1892. Serial No. 425.951. (No model.) l

To @ZZ whom' it may concern:

Be it known that I, MAROENE B. DUNBAR, a citizen of the United States, residing at Torrington, in the county of Litchfield and State of Connecticut, have invented certain companying drawings forming part of this specification in which,

Figure lis a side elevation of my improved skate complete. Fig. 2, a plan view of the sole plate. Fig. 3, a longitudinal section on the line a; m in Fig. a. Fig. 4t, a transverse section on the line y y in Fig. 3. Fig. 5, a similar section illustrating slight changes in the details of construction, and, Fig. l'6 is a detail sectional View on the lines z z in Fig. 1, illustrating the manner in which the Shanks of the sole clamps are held in place.

1 denotes the blade, 2 the heel plate which is rigidly secured thereto in the ordinary or any preferred manner, and is provided at its forward end with an engaging lug 3, 4 the heel slide having the usual engaging lugs 5, 6 the sole plate,7 the sole clamps, the shanks 7a of which are pivoted to a plate 8 having .a threaded lug 9 engaged by the usual adjusting screw 10, the rear end of said screw engaging and turning freely in an eye 11 which is pivoted to the locking lever 12. These parts with the exception of the sole plate may all be of any ordinary or preferred construction and as they are not of the essence of my invention, will not be described in detail. under side with a rib 13 the bottom of which is straight, t'. e. not curved to correspond with the curvature of the sole plate, and which engages a groove 14 in a plate 15 which is rigidly secured to the blade a. This rib enables me to use relatively light metal for the sole plate to which it imparts the required rigid- The sole plate is provided on its ity, the rib itself resting firmly on plate 15 inV which it slides when the skate is extended. If preferred the groove ltmaybe formed in the rib, as in Fig. 5, and plate 15 may be provided with a rib 13' engaging said groove, as is clearly shown in said figure. In the drawings I have shown plate 15 as -provided with ears 16 which rest upon the opposite sides of the blade to which they are secured by arivet 17 which passes through the ears and' the blade. In practice the sides of the rib are made to taper outward from its base, and the sides of the groove to taper inward from its bottom so that when the rib is slid into the groove it cannot be moved except in the man- V ner which will' be presently explained. It will be seen in Figs. 1 and 6 that the use of rib 13 enables me to dispense with the button ordinarily used in this class of skates to hold the shanks of the sole clamps in place.

13b, see Fig. 6, denotes slots at the rear end of the rib which receive shanks 72L and retain them in place, thereby dispensing with the use of the buttons heretofore essential.

18 denotes threaded holes in plate 15, and 19 ahole through the sole plate and rib. A screw 2O passes through hole 19 and engages either-of the threaded holes in plate 15. 4To move the sole plate therefore itis simply necessary to remove screw 20 and move the plate eitherforward or backward as may be required until hole 19 registers with the next hole 18 in plate 15. In the drawings I have shown plate 15 as provided with live holes, more or less may be used if preferred, I iind five quite sufficient, however, in practice. It will be seen that this adjustment enables the user to lengthen the skate with very little trouble and at the same time makes the skate very strong, ss in addition kto screw 20 the sole plate is held locked in position by the engagement of the rib with the overhanging groove.

Having thus described my invention, I claim:

1. The combination with a blade and a plate 15 rigidly secured thereto and provided with threaded holes, of av sole plate having on its under side a rib 13, a tongue and groove connecting said plate and said rib, slots 13b at the rear end of the rib, sole clamps engaging said slots and connected to a plate 8 hav'l ing a lug 9, an adjusting screw engaging said IOOk lug, a hole 19 through the sole plate and rib 13, and a screw adapted to pass through the hole in the sole plate and rib and engage either of the holes in plate 15.

2. The combination with the blade having a plate 15 rigidly seeured thereto said plate having threaded holes 18 and sole clamps of ordinary construction, of the sole plate having on its under side a rib, a tongue and groove connection between said plate and said rib said rib having slots 13b at its rear ends which are engaged by the Shanks of the sole clamps for the purpose set forth, and a screw passing through the sole plate and engaging either of the holes in plate 15.

In testimony whereof I affix mysignature in presence of two witnesses.

MARCENE B. DUNBAR. Witnesses:

OHAs. L. MCNEIL, J oI-IN W. BROOKS.

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