Year: 1888

page_text: Date of Application, 13th Feb., 1888
Complete Specification Left, 13th Nov., 1888
Complete Specification Accepted, 14th Dec., 1888
I, THOMAS STRUTHERS MINNES, Whitefield Brass Works, Govan, County of
Lanark, Manufacturer, do hereby declare the nature of this Invention to be as
follows:-
This Invention relates to improvements in apparatus for testing spiral and like
springs and the apparatus constituting the Invention consists of a sole or base from
one end of which there projects vertically a bracket or standard whereon a lever is
centred by one end. On the sole or base there is also carried an indicating board
having a dial or scale upon it divided off into pounds or other values and in con-
junction with the said dial or scale a finger or pointer is provided the latter being
secured upon the lever. Between the said finger or pointer and the vertical bracket
or standard the spring to be tested is held one end of it being connected to the lever
whilst its other end is connected to a holdfast on the sole or base, which holdfast is
supported upon a cam or eccentric so as to be capable of being raised and lowered.
On the lever there is hung a weight or weights capable of being moved along in the
act of testing the spring the compression being indicated by the finger or pointer
upon the dial before referred to.
ובד
1000
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow,
Agents.

page_text: Improvements in Apparatus for Testing Spiral and like Springs.
I, THOMAS STRUTHERS MINNES, Whitefield Brass Works, Govan, in the County of
Lanark, Manufacturer, 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 Invention relates to improvements in apparatus for testing spiral and like
springs and as illustrated in side elevation at figure 1, in plan at figure 2 and in end
elevation at figure 3 of the annexed drawings, the apparatus constituting the Invention
consists of a sole or base A, from one end of which there projects vertically a bracket
or standard B in jaws in whose upper end there is centred a lever or steelyard C, the
bearings D of the lever being preferably knife edged as shewn. To one side of the
standard B there is secured a horizontal bracket E, which at one end is furnished
with a pair of spring jaws F between which is held vertically a scale G divided off
into inches, pounds or other values. In conjunction with the scale an indicating
lever H is provided the said lever being connected by links I, to the bracket E and
by links J, K, to a jaw L, which has a guiding spindle M, working through a vertical
sleeve N formed on or secured to the bracket E. The spring X to be tested has its
lower end secured to or rested upon a support O which is adjustable vertically on a
bar or rod P projecting upwards from the sole plate A, the support O being held in
position by a pinching screw Qor its equivalent. The upper end of the spring X is
connected to or bears against a block R inserted between it and the lever or
steelyard C, the said lever having a knife edge bearing S resting upon the top of the
block as shewn. The block R is connected to the indicating apparatus by a bent
rod T one end of which is inserted in the jaw L, and on the lever or steelyard C there
is or are hung a weight or weights U capable of being moved along in the act of
testing the spring the lever or pointer H, being caused to indicate the compression on
the scale G through the mechanism hereinbefore described.
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 1
claim is :-
1. The general arrangement and combination of parts constituting the improved
apparatus for testing spiral and like springs, substantially as hereinbefore described
with reference to the annexed drawings.
2. In apparatus for testing spiral and like springs the combination of the weighted
lever C, indicating lever H (actuated from said weighted lever) and a dial or scale,
substantially as set forth with reference to the appended drawings.
Dated this Twelfth day of Novembar 1000
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow,
Agents.