Improvements in Skates.
Year: 1896

page_text: Date of Application, 2nd May, 1895-Accepted, 6th June, 1896
COMI TELE DI MUIFICATION.
Improvements in Skates.
I, ERNST OTTO FRIEDRICH, of Remscheid, Rhenish Prussia, Germany,
Manufacturer, do hereby declare the nature of this invention and in what manuer
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
1
.
This invention relates to improvements in fastening devices for skates; it has for
its object to enable the skater to work independently and fasten separately the sole
as well as the heel cramps, or single crainps for the heels, wherein each set of
cramps or cramp is operated for closing or opening them by a horizontal disc under
the said cramps, which is turned by a wrench or screw-key on its vertical axis
formed on the stay between the keel of the skate and the sole-plate. This
horizontal disc is provided on its top face with a continuous spiral groove, into
which engage the downwardly bent. projections of the inner ends of the cramps,
while the body of the latter is guided in each case in a suitably disposed guide-piece
under the sole-plate of the skate, either cross-ways to the length of, the skate, or
at an angle to the latter, or parallel to the length itself. In turning the spirally
grooved disc the one way, the mentioned projections of the cramps will be caused
to approach, by their being engaged in the groove, the centre of the disc, and. so to
cramp the sole or heel of the shoe; and turning it the other way, the cramps will
recede from the disc-centre and so loosen the skate from the foot. By this
device each set of cramps may be fastened as strongly as may be desired, indepen-
dently from the other sets, which is not the case in other systems of skates, where
a fastening screw works sole- and heel-cramps at one operation, so that one set of
them cannot be fastened closer than the other.
The accompanying drawing is a representation of this invention, and
Fig. 1 shows in reduced scale the side-view of a skate.
Fig. 2 shows the plan or top-view of Fig. 1.
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1.1
Fig. 3 shows in full size a cross-section along the centre of a fastener with a pair
of cramps closed.
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Fig. 4 shows a horizontal section of Fig. 3 along line I-I of Fig. 3.
.
Fig. 5 is a side-view of a modification of the arrangement of heel-cramps on a
skate in reduced scale.
Fig. 6 is a top-view of Fig. 5.
The stays A and A', which connect the keel B of the skate to the sole-plate C,
in Figs. 1 to 6, are properly distanced, so as to serve also each as a turning-pin for
discs G and G. These discs are mounted each on a cylindrical part E, formed
over a breast of the stay, and have a hub or central boss For F¹ respectively,
shaped hexagonally or otherwise, polygonally, suitable for being operated by a
screw key or wrench to turn the disc. On the upper face of each disc G and G'
is a spiral groove, extending from the centre to the periphery, and having a stop
at the outgoing end of the spiral, as seen in Fig. 3 at S.
Between the surface of the disc G or G' respectively, and the sole-plate is fixed
in the desired direction to the heel or sole, a guide piece or slide-way D, D' or D'
for the cramps-J, J2 or Js respectively-so that the central line of each cramp
is radially directed to the centre of the disc G.
These cramps J, J or J, have each a downwardly bent tooth or projection K,
K or K, which engages into the said spiral groove in the respective discs, and
by this tooth, the cramps may be caused to move radially to or away from the
centre of pin E, by the discs being turned round in the one or other direction;

page_text: at their outer ends the cramps have upwardly directed cramping hooks L or L',
as shown in Figs. 1, 2 and 3, to grasp the sole or heel of the shoe respectively.
In the form represented Figs. 1, 2, the heel of the shoe may be grasped between
cramps J' sliding in the two guide-pieces D¹, converging each at an angle of
45 degrees to the longitudinal centre-line backwards to the centre of disc G'.
Said cramps J have upright angular hooks L', arranged to fit the corners of the
forward part of the heel; in turning the hexagon F¹ of the disc, the cramps J
will press the heel strongly against the upright back-stay P of the skate.
In the form of execution Figs. 5 and 6, the heel is held fast between longi-
tudinally arranged, diametrically opposed movable cramps J and having their
guides in longitudinal openings O of the sole-plate and in slide-ways fixed under
the latter, to allow the teeth K' of the cramps J³ to slide along them when the
spirally grooved disc G' is turned for fixing the cramps to, or for undoing them from
the heel of the shoe.
The sole-cramps are of the same form as in Figs. 1 and 2.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :
1.) In a skate the arrangement of separate fastening devices for securing the
soles of the boots or shoes to the skate independently of the heel, said fastening
device consisting of the combination of a disc G mounted on a pin E of a stay A
and having a spiral groove in its upper face, sliding pieces J having projections K
engaging into the grooves of the discs G and being guided in slides or guide-
ways D so as to be moved diametrically outwardly or inwardly and crossways to
the longitudinal direction of the skate according to the sense in which the disc G
is turned round.
2.) In a skate the arrangement of separate fastening devices for securing the
heels of the boots to the skates independently of the sole, said fastening device
consisting of the combination of a disc G¹ mounted on a round pin of a stay A¹
and having a spiral groove in its upper face and sliding pieces J2 standing at right
angle to each other and engaging into the grooves of disc G' and being guided in
guide-ways D¹ so as to be moved radially inwards or outwards according to the
direction in which the disc G' is turned round.
3.) A variation of fastening the skate to the heel consisting of sliding pieces J³
moved diametrically outwards or inwards in the longitudinal direction of the skate
by being guided in sliding pieces D2 and slots O in the sole plate when the
grooved disc G' is turned one way or the other.
Dated this 29th day of April 1896.
ERNST OTTO FRIEDRICH,
Per Karl J. Mayer,
Agent.