Year: 1894

page_text: Date of Application, 5th Dec., 1894-Accepted, 5th Jan., 1895
while being compact in shape as well as effective in action.
In order that my invention may be clearly understood and more easily carried
into practise I have appended hereunto a double sized sheet of drawings upon which
I have fully illustrated the nature of my said invention as well as the mode of
carrying the same into effect.
Figure 1 is an elevation of a spanner shewing same with jaws adjusted ready for
gripping.
Figure 2 is a similar to Figure 1 but shewing spanner with screw in position for
adjustment of jaws.
Figure 3 is a vertical cross through Figure 1 on line 1-2.
Figure 4 is a similar cross section to Figure 3 through Figure 2 on the
line 3-4.
Figure 5 is a sectional elevation shewing the connection of the revolving screw
to the spanner.
Figure 6 is a similar sectional elevation shewing a modification of the same.
Figure 7, shews another mode of attachment of the spindle B to the body A.
In carrying my invention into effect I form the jaw A of the spanner with the
slotted bar or fork projection a' & a² between which I place the screw B which is
attached to or forms part of the handle C and is also secured at its end ³ to the
jaw A in such a manner that it may freely revolve as hereafter described. The
jaw D is mounted to slide upon the fork projections a¹ & a² and the thread of the
screw B is cut away on two sides to form the square faces 6 and 62 along
the required length of the travel of the jaw D so that when the said screw B is
turned as shewn by Figures 1 and 3 with its thread engaging with the tapped
recesses d¹ and d2 which are formed in the sides of the travelling jaw D the said jaw
is thereby fixed in the required position and cannot be moved along the slotted bar
or fork. Upon the screw B being turned with its flat sides 61 and 62 parallel with
the face of the slotted bar represented by a' and a² and as shewn by Figures 2 and 4
it will readily be seen that the jaw D can be freely moved along the bar in either
direction and thereby adjusted to the required position to suit size of the nut to be
gripped. The attachment of the screw B to the main body of the spanner A is
effected by means of a course thread formed on the end of the screw which
engages with a tapped hole formed on the body A to receive it so that as the
handle is turned to cause the fine thread on the spindle E to engage with the
sliding jaw, the said jaw D is carried slightly forward thus giving a tight grip to
the nut and at the same time drawing both jaw D and screw spindle into a
condition of combined tightness. In attaching the end of the screw B to the jaw
or bar so that it may be firmly secured thereto and at the same time be free to turn
I may provide the end 63 with the circular groove b with which the nose of the
pin E
engages or I may thread the inner faces of the top and bottom bars a³ and a³
so that the screw B engages with them over its whole length as shewn by Figure 6.

page_text: Of course in place of screw thread on the revolving spindle B I may have annular
and concentric grooves or projections which would be engaged or disengaged with
the jaw A in a similar manner to that of the thread already 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 I
claim is :-
1st. The improvements in spanners for cycles & other purposes substantially as
herein set forth and shewn upon the accompanying drawings.
2nd. In spanners, the screwed grooved, or serrated spindle B having flat faces b¹ ª
operated in combination with the sliding jaw D substantially as and for the purpose
herein set forth and shewn.
3rd. In spanners the screw thread attachment of the spindle B to the body A in
combination with the sliding jaw D substantially as and for the purpose herein
described and shewn by Figure 7.
Dated this 1st day of December 1894.
GEORGE BARKER,
77, Colmore Row, Birmingham, Agent for Applicant.