IMPROVEMENTS IN BEARINGS FOR THE SLIDING SEATS OF BOATS
Year: 1884

page_text: I WILLIAM ROBERT LAKE of the firm of Haseltine Lake & Co Patent Agents
Southampton Buildings London in the County of Middlesex do hereby declare the
nature of said Invention for "IMPROVEMENTS IN BEARINGS FOR THE SLIDING
SEATS OF BOATS" and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
This Invention relates to the bearings for the sliding seats of boats and comprises
a series of travelling carriages or boxes provided with ball-bearings, such carriages
supporting the seat, and being constructed as hereinafter set forth, for the purpose
of enabling the seat to slide back and forth, while the occupant is in the act of
rowing, with as little friction as possible.
In the accompanying Drawings in which similar letters of reference indicato
corresponding parts
Figure 1 is a plan view of a portion of a shell-boat provided with my
improvement.
Figure 2 is a transverse vertical section of the same.
Figure 3 is an enlarged view, partly in longitudinal vertical section and partly
in elevation, of my improved carriage or box
Figure 4 is a transverse vertical section of the same.
A represents the gunwale and body of the boat; B the guards; C two tracts,
preferably metallic, running lengthwise with the boat, and secured thereto by
bolts or screws passing through their flanges C¹; D the seat, and E the boxes or
carriages supporting the seat. These boxes or carriages which are made of
composition of metal and either cast or stamped, are each made in two parts, as
shown, of greater length than depth, flat at top and bottom, and internally grooved
at e for the balls a.
His a block made of hardened steel, of shape to correspond with the box, and
externally grooved for the balls at h, said block being placed within the box as
shown. The passage for the balls is therefore horizontal and parallel at its upper
and lower portions, and curved at its end portions; and it is this shape which
adapts the ball-bearing for use in connection with the sliding seat of a boat, and
distinguishes it from a bicycle ball-bearing. The two halves of the boxes aro
secured together by bolts b, and are provided with guides E for preventing the
D

page_text: · bearing from leaving the track and with internal shoulders E" for preventing the
balls from dropping from the groove when the bearing is removed from the track.
The seat D is secured to the boxes by means of bolts or screws passing through
the flanges E By making the block H of hardened steel, wear is reduced to a
minimum, but the boxes may be of cast or stamped metal, or composition of metal,
the greatest wear coming on the blocks.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
-
The herein described improved ball-bearing for sliding seats for boats, consisting
essentially of the internally grooved box E, of substantially the shape shown,.made
of cast or stamped metal, or composition of metal; and the externally grooved
block H made of hard or hardened steel and provided with "balls, substantially as,
and for the purpose, set forth.