IMPROVED FASTENING FOR STRAPS OR BANDS FOR TRANSMITTING MOTION AND OTHER PURPOSES
Year: 1881

page_text: "
PROVISIONAL SPECIFICATION left by Thomas Morgan at the Office of the
Commissioners of Patents on the 7th February 1881. A communication from
abroad by Frederic Schindler, of Koenigshoffen, Alsace.
THOMAS MORGAN (Secretary of the Inventors' Patentright Association, Limited),
of 21, Cockspur Street, Charing Cross, Westminster, in the County of Middlesex.
IMPROVED FASTENING FOR STRAPS OR BANDS FOR TRANSMITTING MOTION AND
OTHER PURPOSES." (A. communication from abroad by Frederic Schindler, of
Koenigshoffen Alsace.)
The apparatus which forms the object of this Invention is a fastening for securing
or connecting the ends of bands or belts for transmitting motion to machinery and
other purposes. The principal feature of this fastening consists in an eccentric or
cam with roughened or toothed surfaces, mounted eccentrically upon a support, and
exerting a pressure upon the belt, increasing in proportion to the tension on the
latter. The employment of this system of fastening preserves the belts, saves
labour, and causes less waste of time than other systems, in consequence of the
facility with which the joint is made and the celerity with which the belt is enabled
to be returned to action.
The improved fastening is composed of two parts, first, a support formed by a
plate with two sides turned up or bent at right angles and perforated with two
holes; secondly, an eccentric, having flat roughened surfaces, and provided with two
eccentric pins or pivots which fit into corresponding holes. The eccentric is
roughened, toothed, or grooved in helical lines, and the plate forming the
support is provided with holes for the reception of rivets, which serve to attach the
plate or support to one of the ends of the strap or belt. In order to connect
the ends of a belt or strap with this apparatus, the plate or support is placed on one
end of the belt in such a position that its turned-up sides embrace the sides of the
belt, the rivets are then inserted in the holes. The other end of the belt is then
passed under the eccentric and stretched to the required degree, according to the
distance between the drums or pulleys, after which the eccentric is turned down,
so that its helical teeth nip the belt between the eccentric and the plate or support
and prevent it from slipping. At the same time this eccentric being pivotted
eccentrically in its support, presses the belt more tightly the more the belt is
pulled outwards, or, in other words, the pressure of the eccentric and its wedging
9ll....מ

page_text: action are proportional to the tension of the belt. The two portions of which the
apparatus is composed may be made of steel, iron, brass, malleable cast iron, or
other suitable materials.
The important point or feature of the Invention is the fastening or apparatus for
connecting the ends of belts or straps for transmitting motion or other purposes,
the same being especially distinguished by a support or plate attached to one of the
extremities of the belt, and carrying a toothed or roughened eccentric mounted
eccentrically upon this support for the purpose of exerting pressure upon the other
extremity of the belt, the said pressure - being proportional to the tension of the
belt. The form, materials, and dimensions of the parts constituting the fastening
may be modified according to the applications.