US 1666690 A
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Description (OCR text may contain errors)
April 17, 1926. 1,666,690
C. E. DREVITSON SKATE t Filed June 50, 1927 Tjz'q. l.
www@ @an Imwzr Patented pr.`ll7, 1928.`
AGARL DREVlITSON, 0F SOMERYILLE, MASSAHUSETTS.
SKATE A.ippucanon ined 'June ao, 1927.- serial no. masoe.
This invention relates to` an ice .skate which includes a one-piece casting', composed of metal,` such asl aluminum, or an alloy 0f which aluminum forms a considerable part, said casting including a -base portion and upstanding root supports integral therewith, asin the skate disclosedbymy Patent No.
1,115,790, dated November 3, 1914, the basev portion containing theupper edge portion of the steel skateru-nner. f v
The chief objectof the invention is to decrease the weight, and increase 'the strength ofthe base portion of the casting. I accomplish this object by applying to theiupper edge of the runner, ybefore the Vcasting operation, a non-metalliccore, preferably composed of hard wood, although other materials may be used, and forming the base portionk of the casting on the core and on portions ofthe runner' below the core, so that said base portion, while having the desired external surface.area, may have a relatively thin wall, the core displacin a considerable portion of the metal hereto ore employed. l n
Another object is toprovide a skate including a runner, a non-metallic core, andv a one-piece casting, the runner, the core, and the base portionofthe casting being formed to cooperate in preventing fracture of the base portion, when the metal thereof contracts in cooling, andV in preventing distortion of the Arunner'by the contraction of the base ortion.
Ot 'er objects will appear hereinafter;v
Of the accompanying drawings forming a part of this specification,-
Figure 1 is a side view o a skate embodying the invention.`
Figure 2 is a longitudinal section of the same.
Figure 3 is a transverse section on line 3-3 ofFigure 2.
vFigure 4 vis a top plan View of the elongated sole plate shown by Figures 1 and 2.
Figure 5 is a section on line 5-5 of Figure 4. f
Figure 6 is a section on line 6-6 of Figure 2. v
Figure 7 is ure 2.
Figure 8 is a section on line 8-8 of Figure 2.
Figure '9 is 'a fragmentary perspective view, showing a portion of the core.
a section on line 7%7 of Fig- VFigure 10 is afragmentary perspective l view, showing a portion of the runner.
Figure 11 is a section online 11-11 of Figure 9. A- n The same reference characters indicate the same parts in all of the igures. i'
. 12 ldesignates the` runner, and 13 the core constituting elements of my improved skate;-
The core may bemade of any suitable nonmetallic material, preferably kiln-dried hard wood, which may be impregnated with a.. material suoli asoil, pitch or wax, rendering the woodk impervious to moisture. Any
other suitable material, such as bakelite,` may be employed.
The core is provided with a longitudinal groove 14, in its lower edge, receiving the l upper edge of the runner, to locatel the core in a :predetermined position on the runner, thek sides ofthe groove overlapping portions of the sidesof the runner.
15l designates thebase portion of a onepiece metal casting composed of aluminum, y
oran alloy of which aluminum forms a considerable part, cast in a die-casting die on the core 13, and on portions of the runner below the'core. The casting includes upstanding supporting standards 16, 17 land 18, the rear standard 16 having a flange constituting a heel-supporting plate 19. The intermediate and forward standards17 and 18 are connected by an elongated sole plate 20, cast integral therewith.
lThe cast metal contracts incooling, so
that the base portion 15 firmly grips the core. The base portion 15 is reinforced by the core so that, althoughthe wall of the base porl tion may be considerably thinner than heretofore,y the reduction of thickness is compen- .sated for by the core, and a structure is pro- 9 duced of relatively light weight, `and at the same time suliciently strong. By using a.v core of non-metallic material, as described, I sufficiently insulate the upper portion of the .tempered runner from` the hot casting to yprevent the possibility of distortion of the runnery by the heat, and loss-of temper of the runner. The core may be coated vwith asbestos painty to prevent liability of charring its surface.
I prefer to so form the runner,jthe core' and the `base portionl, that these parts cooperate in preventing crosswise fracture of the base portion,due to the contraction 'of the metal thereof in cooling, and in prelventing distortion of the runner by the stress and strainv exerted thereon by the contraction of the cast metal. .Y
To these ends l forni said parts as. next described. Y In the upper' edge of the cere 13, l form transverse grooves or notches 22 (Figure which receive portions of 'the cast metal, so that the base portion of thecastingis provided with keys (Figures 2 and 7) interlockedwith the ends of the notches, to so distrilnite thelengitudinal contraction of .the base portion to prevent liability of crosswise `fracture thereof, which might otherwise exist when the base portion contracts in cooling. j
rlhe runner is provided with orifices 24;
Y (Figure adjacent its upper edge and arthe casting operation. rlhe interlocking of the studs 25 with the runner orifices 24, also so distributes the longitudinal contraction of the base portion as 'to prevent liability of a distorting curvature being imparted to the runner and base portion, by the contraction of the cast metal. rlhis liability exists in the constructionshown by -my former Patent No. 1,459,050, said construction requiring the provision disclosed by said'patent, for preventing distortion.
- 1 am enabled by the `improved construction above described to obviate the necessity of any other distortion-preventing provision.
It will be seen that the orifices 24 are formed wholly below the upper edge of the runner, sothat said edge is uninterrupted or continuous. The continuity of said edge is a factor in preventing distortion.
lt has been found that in a skate of this typeshown, the rear and intermediate standarde 16 and 17, which are made hollow for lightness, are'liable to break at the necks which Y:ein them to the base ortion'l. To
prevent this liability, l locate in each of said standards a reinforcing ferrule 28 of hard metal such as steel, the ferrules being` placed on portions of the casting'die before the casting operation, se that the standards are cast around lthe ferrules. The inner ends of the ferrules are preferably closed, asshown by Figures 2 and 53, each ferrule being thimble shaped.y The rclosed ends bear on the core 13, and prevent the admissionyof molten metal to the cavities of the standards.
The sole plate 2() is provided during the casting operation, with grooves 29, formed by suitable ridges on the die. Said die ridges cause a distribution of the shrinkage of the sole plate and preventv liability ofy fracture thereof when the metal shrinks in cooling.
l. A skate comprising a runner., a nonmetallic elongated core formed to bear on the major portion of the upper edge of the runner, and having a longitudinal groove receiving said upper edge to locate the core on ,the runner, the sides of the groove overlapping portions of the sidesof the runner, anda'one-piece metal casting including an elongatedbase portion cast-on the core and on portions of the sidesV of the runner below 'the core, the casting includingnpstandingy supporting standards.
2. A skate as specified claim 1th-e core being provided in its upper portion with Y casting isr provided with Vstuds interlocked with the walls of the orifices, whereby liability of distortion of the base portion and the runner, when the/cast metal Acontracts in cooling, is prevented.
4t. A skate as specified by claim 1,' the runner being provided with transverse orifices adjacent its upper edge, saidorifices receiving portions of the cast metal, so that the casting is provided with studs interlocked with the-walls of the orifices, whereby liability of distortion ofthe baseportion and the runner, when the cast metal-'contracts in cooling, is prevented, the core being provid ed in its lower portion with transverse notches arranged to coincide with therunner orifices and permit free metal to the orifices. y
5. A skate as specified by claim l, afootsupporting standard element ofthe casting being` hollow and provided with an internal reinforcing fer-rule at its junction withthe base portion, to prevent liability of fracture at said junction. f I
6. A skate as specified by claim 1, a footaccess fof molten supporting standard elementof'the casting being hollow and provided 'with an internal reinforcing ferrule at its junction with the' base portion, to prevent-liability of fracture at said junction, the ferrule .having a closed inner'end bearing on the core.
In testimony whereof I have affixed my signature. v i* Y CARL B. DRnvrrsoN.