A Portable Mill for Grinding Salt, Sugar, and other substances.
Year: 1893

page_text: Date of Application, 6th Feb., 1893-Accepted, 11th Mar., 1893
COMPLETE SPECIFICATION.
A Portable Mill for Grinding Salt, Sugar, and other substances.
I, RICHARD NIXON, 2 Thorpe Hall Terrace, Hale End Road, Walthamstow,
in the County of Essex Coach-builder do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This my invention relates to a new and improved method of grinding salt and
other substances for table and domestic use.
My invention may be described as follows,-reference being had to the
accompanying drawings and the figures and letters of reference marked thereon,
similar letters indicating like parts throughout.
Fig. 1. is a front elevation of my invention with several parts hereinafter
described previously removed to show the more important parts within.
Fig. 2. is a sectional plan of the whole arrangement through the line X-Y.
Fig. 1.
My said invention consists of a rectangular (or other shaped) box, through the
ends of which, a sliding piece of wood or other suitable material, the shape of
which is seen in elevation Fig. 1A and in section Fig. 2A is made to pass so as
to protrude through both ends, near the front of the box. It is intended that
behind this said sliding piece a block of salt, such as is ordinarily sold for a penny
may be placed flush up against it and held tightly in position by a press board and
spiral spring as indicated in Fig. 2. in sectional plan. B, represents the block
of salt placed in position for grinding, P, the press-board, and S, the spiral
spring.
The aforesaid sliding piece A, is perforated as shown in Fig. 1. so as to allow
the salt as fast as it is ground to pass through into the space E. Fig. 2. and down
through a suitable aperture in the bottom of the box into a V-shaped funnel
arrangement, leading to any receptacle to be filled.
The salt is ground by the friction of the perforated sliding piece A, against the
block of salt.
The sliding motion is given to the sliding piece A, in the following manner :-
The space E is first protected from the metal work of the driving apparatus by
a piece of wood, K, Fig. 2, not shown in Fig. 1. A driving rod is fastened to this
cover board, by one end, by means of a spindle and the other end is fastened to a
crank which is fastened on a spindle going through the outer wall of the box. By
attaching a handle to the spindle, the crank is made to revolve and thus it gives a
sliding motion to the grinding board A.
The driving apparatus is shown in plan in Fig. 2. R is the rod, M the crank
and H the handle. The driving apparatus is not shown in Fig. 1. being removed
as aforesaid to show the perforated slide A.
In place of the revolving crank for actuating the sliding piece I may use a
lever. For grinding sugar, toast, cocoanut, and other substances I attach a
roughened metal plate to the sliding piece, which may also be reversible.
The various parts herein mentioned may be subject to modification for special
uses without departing from the principles of my invention.

page_text: 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
A portable mill or grinder constructed substantially in the manner, and for the
purpose set forth.
Dated this 6th day of Fahruary 1802