Improvements in Spanners.
Year: 1895

page_text: Date of Application, 2nd Oct., 1895
Complete Specification Left, 1st Aug., 1896-Accepted, 2nd Oct., 1896
Improvements in Spanners.
We, CLARA BLAKEMORE of 7, Prescot Street New Brighton, Cheshire, and
JAMES CHANDLER, of 129, Field Street, Liverpool, Mechanical Engineer, do
hereby declare the nature of the said invention to be as follows:-
-
One jaw of the spanner is adjustable and is pressed towards the fixed jaw by a
spring. Upon the bottom of the adjustable jaw or upon a continuation of it are
formed serrations with which a spring pawl or detent engages.
The action of the spanner is :-The adjustable jaw closes upon a nut by means
of its spring, the spring pawl or detent then engages with one of the serrations.
upon or connected with it and holds it rigid for the time being.
1005
J. A. COUBROUGH,
Registered Patent Agent,
10 St. George's Crescent, Liverpool, Agent for the Applicants.
improvem
We, CLARA BLAKEMORE, of 7, Prescot Street, New Brighton, Cheshire, and
AMES CHANDLER, of 129, Field Street, Liverpool, Mechanical Engineer, do.
ereby declare the nature of this invention and in what manner the same is to-
e performed, to be particularly described and ascertained in and by the following
tatement:-
A spanner constructed according to this invention comprises a fixed jaw and a.
movable jaw. The movable jaw is pressed towards the fixed jaw by a spring and
is temporarily locked by a detent or pawl, also controlled by a spring.
In the drawing hereto annexed, Figures 1 and 2 are front and side views of a
spanner or "monkey wrench, formed according to this invention. A is the handle-
of the spanner, a being the fixed jaw and b the movable jaw thereof. The jaw b.
is formed on the end of the shank c which works in a casing d rivetted to the
handle. The jaw b is pressed towards the jaw a by the spiral spring e within the
casing d. Serrations fare formed on the shank c, with which the pawl g is.
adapted to engage, said pawl being controlled by the spring h.
Figures 3 and 4 are front and side views shewing a pocket spanner or cycle.
wrench formed according to this invention. A is the handle of the spanner, a being
the fixed jaw and b the adjustable jaw thereof. The jaw b is pressed towards the
In the base of the jaw b (which is dovetailed in the
jaw a by the spring e.
handle A) are formed serratious f, with which a pawl 9, actuated by a spring h, is.
adapted to engage. The pawl g may have two or more teeth if required.
In working, the spanner is opened by drawing back the jaw b and locking it by
the pawl g. The jaws a and b are then placed over the nut and caused to grasp it.
by releasing the pawl g. To turn the nut the pawl g is allowed to remain in one-
of the serrations thereby making the jaw b rigid. To return the spanner upon.

page_text: the out the pawl g is depressed by the thumb or withdrawn by the thumb piece g¹,
thereby allowing the jaw b free movement upon its spring e.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
In a spanner comprising a fixed and a movable jaw, the combination of a movable
jaw which is pressed towards said fixed jaw by a spring, with a spring actuated
pawl adapted to engage with serrations formed in (or in a part of) said movable
jaw, whereby said movable jaw may be alternately locked and released as the
spanner is respectively turned with and returned upon a nut; substantially as
described.
Deted thie 31st day of July 1896
J. A. COUBROUGH,
Registered Patent Agent (Qual. by Exam.),
10, St. George's Crescent, Liverpool, Agent for the Applicants.