Improvements in the Mode and Means of Securing Catches onto Door-knob Spindles.
Year: 1898

page_text: Date of Application, 25th May, 1898-Accepted, 23rd July, 1898
COMPLETE SPECIFICATION.
Improvements in the Mode and Means of Securing Catches onto
Door-knob Spindles.
I, HENRY SANDERS, of St. Mary Street, Ladywood, Birmingham, in the County
of Warwick, Manufacturer, do hereby declare the nature of my said invention
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement: -
My invention has for its object improvements in the mode and means of secur-
ing catches onto door knob spindles by which I am enabled to easily and readily
secure the catch or latch onto the spindle of the knob in a cheap and effective
manner.
Figure 1 is an elevation shewing the knob and catch secured to a door.
Figure 2 is a similar view to Figure 1 shewing the knob and catch detached.
Figure 3 is an end view of Figure 2.
Figure 4 is a similar view to Figure 3 shewing the slide drawn back and spindle
released..
Figure 5 is a plan and end view of the catch or latch..
Figure 6 is a plan view of the slide or locking piece.
In carrying my invention into practice I form my catch or latch A at the end
which screws onto the spindle of the 'knob B with the grooves or channelled
edges or dovetail recesses a¹ and these grooves or channels may be formed by turn-
ing up and bending over the sides a² or edges of the plate or blank from which
the catch is made at this particular part as clearly shewn at Figures 5 or the
grooves or channels may be formed from the solid or cast or formed V shape or
otherwise constructed. I then fit into this catch the sliding or locking piece D
which slides into the grooves a¹ and this slide or locking piece is formed fork
shaped at the end which fits into the grooves with the slot d' in the centre so that
when the slide or locking piece is pushed forward the spindle b₁ which is formed
either square or with two flats on either side fits into this slot the fork d embrac-
ing the sides of the spindle as shewn at Figures 1, 2, and 3, thereby locking or
firmly securing the catch or latch on the spindle. The end a³ of the catch or
latch A is bent up at right angles or there abouts so as to prevent the slide or lock-
ing piece from being drawn too far out of the slots and the end d of the slide or
locking piece is bent up also by which means this slide or locking piece may be
drawn outward or clear of the spindle b¹ as shewn at Figure 4 thus allowing the
catch or latch to be adjusted as required. This slide or locking piece also
strengthens or stiffens the latch or catch. The part forming the forks I prefer
to use as shewn but the part D would be effective if there was only one leg to
the fork.
. Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is :--
CLAIM.
tahan anta doar knob

page_text: spindles consisting essentially of the sliding or locking piece such as D working
in under cut grooves or dovetail recesses such as a¹ on the catch or latch A and
having a slot or fork formed at one end which when the sliding or locking piece
is pushed forward embraces the spindle of the knob in the manner and for the
purpose substantially as herein set forth and as shewn upon the drawings.
1000
HENRY SANDERS,
By George Barker,
Fellow of the Chartered Institute of Patent Agents,
77, Colmore Row, Birmingham.