Improvements in Spanners or Wrenches.
Year: 1897

page_text: Date of Application, 21st Jan., 1897
Complete Specification Left, 27th Feb., 1897-Accepted, 27th Mar., 1897
Improvements in Spanners or Wrenches.
I EDWIN BLAKE SMITH, Engineer, of No. 2 John Dalton Street, Manchester,
in the County of Lancaster, do hereby declare the nature of this invention to be
as follows:-
This invention relates to the construction of adjustable spanuers or wrenches,
and particularly to that class wherein the movable jaw is roughly adjusted
by sliding the same by hand, and is then tightened and fixed by a locking
arrangement.
The fixed jaw of the spanner is made of one piece with side plates forming the
shank and handle of the same. The head and handle are made solid by the
introduction of filling-pieces which are fixed solid between the plate by means of
pins or rivets, leaving a slot between the head and the snank in which slides the
adjustable jaw.
The adjustable jaw is formed or provided with a tail-piece or mutilated screw of
a flattened section, the screw thread being on the edges only, and the tail piece so
formed that it can slide endwise inside the handle, but cannot turned therein. This
tail-piece passes through a nut which has a double milled or nurled edge, and is
carried between the two plates of the handle, the milled edges projecting through
slots in the plates, the narrow strap between the slots being bulged or curved so as
to embrace the neck of the nut, and form bearings in which the nut can revolve,
but not move end wise.
The central hole of the nut is slotted or elongated in section so that the screw
threads only exist at two sides, and in one position of the uut the tail piece of the
movable jaw can slide endwise through the nut, the threaded part of the tail-piece
sliding clear through the slotted part of the nut, and it will be understood that
when the nut is in this position the movable jaw can be roughly adjusted to the
nut to be operated on, and that whilst the shank is still being held in the hand
the nut can be turned by the thumb and finger so as to bring the mutilated threads
into gear and so tighten up and lock the said jaw. A line is made on the nurled
edges of the nut, and if desired on the side plates of the handle, to indicate by
either sight or touch when the nut is in the free position for sliding the movable
jaw in or out. I may here remark that, if preferred, the whole adjustment of the
movable jaw may be effected by turning the nut, but I do not consider it advisable
to use the same for other than lecking purposes, as the rough adjustment is much
more readily and quickly performed by sliding the movable jaw, and the locking is
instantaneous.
To prevent any liability of the mutilated threads jamming or butting against
each other I use a V-thread and I bevil or round off the leading edges of the
threads on the tail piece of the movable jaw, and I slope the sides of the slots in
the nut so that there is no liability of the edges to catch against each other.
Dated this 20th day of January 1897.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.

page_text: I EDWIN BLAKE SMITH, of No. 2 John Dalton Street, Manchester, in the
County of Lancaster, Engineer, 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 the construction of adjustable spanners or wrenches,
and particularly to that class wherein the movable jaw is roughly adjusted
by sliding the same by hand, and is then tightened and fixed by a locking
arrangement.
On the drawings annexed to this specification, Fig. I is a side elevation, and
Fig. 2 a face view of an improved adjustable spanner or wrench made according
to my invention; Fig. 3 is a transverse section of the same taken through about
the line A-B on Fig. 1. Fig. 4 is a similar section through the line C-D, and
Fig. 5 a section through the line E-F. The remaining figs. are various views
of detached parts hereinafter more particularly referred to. Figs. 4, 5, 6, 78
and 8 being drawn to a larger scale.
The fixed jaw a of the spanner is made of one piece with the side plates b forming
the shank and handle of the same. The head and handle are made solid by the
introduction of filling-pieces c which are fixed solid between the plates by means of
pins or rivets, leaving a slot between the head and the shank in which slides the
adjustable jaw d (see Figs. 1, 2 and 3).
The adjustable jaw d is formed or provided with a tail-piece or mutilated
screwe of a flattened section (see detached side view, Fig. 14, partial elevation
Fig. 6, and transverse section Fig. 7) the screw thread being on the edges only,
and the tail piece so formed that it can slide end wise inside the handle but cannot
turn therein (see also section Fig. 5). This tail-piece e passes through a nut f
which has a double milled or nurled edge and is carried between the two plates b of
the handle, the milled edges projecting through slots in the plates b, the narrow
strap 6 between the slots being bulged or curved so as to embrace the neck of the
nut (as clearly seen in cross section at Fig. 4) and form bearings in which the
nut can revolve, but not move end wise.
It will be seen on the detached plan view of the nut f (Fig. 8^) that the central
hole of the nut is slotted or elongated in section so that the screw threads only
exist at two sides, and in one position of the nut the tail piece e of the movable jaw d
can slide end wise through the nut, the threaded part of the tail-piece sliding clear
through the slotted part of the nut, and it will be seen that when the nut is in
this position the movable jaw d can be roughly adjusted to the nut to be operated
ou, and that whilst the shank is still being held in the hand the nut can be turned
by the thumb and finger so as to bring the mutilated threads into gear and so
tighten up and lock the said jaw d. A line is made on the nurled edges of the
nut f and if desired on the side plates of the handle, (see Figs. 1 and 8) to indicate
by either sight or touch when the nut is in the free position for sliding the movable
jaw d in or out. I may here remark that, if preferred, the whole adjustment of the
movable jaw d may be effected by turning the nut f, but I do not consider it
advisable to use the same for other than locking purposes as the rough adjustment
is much more readily and quickly performed by sliding the movable jaw, and the
locking is instantaneous.
To prevent any liability of the mutilated threads jamming or butting against

page_text: each other I use a V-thread and I bevil or round off the leading edges of the
threads on the tail-piece e of the movable jaw and I slope the sides of the slots in
the nut (see plan view on Fig. 84) so that there is no liability of the edges to
catch against each other.
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 is :-
.
1. In a spanner or wrench the combination with a slotted shank or handle (having
a fixed jaw at one end) of an adjustable jaw provided with a flattened tail-piece
capable of sliding end wise (but not of revolving) in the said shank or handle and'
having its edges screwed; and of a partially screwed slotted nut mounted in the
said shank or handle so as to be capable of revolving therein (but having no.
endwise motion) for the purpose of fixing or locking the said adjustable jaw
substantially as hereinbefore described and illustrated by the drawings annexed.
2. In a spanner or wrench the combination with a slotted shank and fixed jaw,
of a movable jaw provided with a flattened tail-piece capable of sliding endwise.
(but not of revolving) in the said shank or handle and having its edges screwed
and the leading edges or ends of the threads beveled or rounded, and a partially
screwed slotted nut, the sides of the slots being sloped, the said nut being mounted
in the said shank or handle so as to be capable of revolving therein (but having
no endwise motion) arranged and operating substantially as and for the purpose
herein before described and as illustrated by the drawings annexed.
3. An adjustable spanner or wrench constructed and operating substantially in.
the manner herein before described and illustrated.
1
1
Sall
1
.
1007
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.