Improvements in Appliances for Instant Fixing in Position and Releasing Seats, Tables, Rocket Tubes, Platforms, Beds, Lamps, Dishes, Music Stands, and other Fittings and Furniture on Board Ship and on Shore, Stationary, Travelling, or Portable.
Year: 1890

page_text: Date of Application, 9th July, 1890
Complete Specification Left, 9th Apr., 1891--Accepted, 23rd May, 1891
PROVISIONAL SPECIFICATION.
Improvements in Appliances for Instant Fixing in Position and
Releasing Seats, Tables, Rocket Tubes, Platforms, Beds, Lamps,
Dishes, Music Stands, and other Fittings and Furniture on Board
Ship and on Shore, Stationary, Travelling, or Portable.
I, THOMAS JENNER of Mill Lane, Taunton in the County of Somerset, Brewery
Proprietor do hereby declare the nature of this invention to be as follows:-
For the purpose of this invention I provide one or more double armed levers,
on the outer frame, deck, table, floor or other base or fixed part to which the object
in question is to be temporarily made fast or fixed. One end of the lever receives
the downward pressure or weight of the object to be fixed. The depression of this
arm of the lever causes a projection on the other arm of same to be brought against
the side of the object so as to jamb it in position either against an opposite side
of the frame enclosing the object or against a similar projection on another such
double armed lever on the opposite side or against an opposite projection from the
floor, deck, platform, table or other part to which the object is to be fixed. The
projection on the arm is formed as or fitted with an elastic or partly elastic pad or
gripping or interlocking surface. This arm of the lever is by preference made
heavier than the other arm and will therefore drop when the object is released and
raised. The releasing action may be assisted by a spring. Or I may apply a
lever to turn the double armed lever on its fulcrum. In the case of a platform
such as for a stationary, travelling or portable weighing machine I by preference
use one or more such levers on each of the four sides.
Dated this 9th day of July 1890.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Appliances for Instant Fixing in Position and
Releasing Seats, Tables, Rocket Tubes, Platforms, Beds, Lamps,
Dishes, Music Stands, and other Fittings and Furniture on Board
Ship and on Shore, Stationary, Travelling, or Portable.
I, THOMAS JENNER of Mill Lane, Taunton, in the County of Somerset, Brewery
Proprietor, 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:-
For the purpose of this invention I provide one or more double armed levers,
on the outer frame, deck, table, floor or other base or fixed part to which the
object in question is to be temporarily made fast or fixed. One end of the lever
receives the downward pressure or weight of the object to be fixed. The depression
of this arm of the lever causes a projection on the other arm of same to be brought
against the side of the object so as to jamb it in position either against an opposite
side of the frame enclosing the object or against a similar projection on another
such double armed lever on the opposite side or against an opposite projection from
the floor, deck, platform, table or other part to which the object is to be fixed.
The projection on the arm may be formed as or fitted with an elastic or partly
elastic pad or gripping or interlocking surface. This arm of the lever is by
preference made heavier than the other arm and will therefore drop when the
object is released and raised. The releasing action may be assisted by a spring.

page_text: Or I may apply a lever to turn the double armed lever on its fulcrum. In the
case of a platform such as for a stationary travelling or portable weighing machine
I by preference use one or more such levers on each of the four sides.
Figures 1 and 2 of the accompanying drawings are vertical sections of such an
appliance in connection with a platform say of a weighing machine, Figure 1
shewing the platform lowered and fixed and Figure 2 shewing the same raised and
released. A and B are the two arms of a lever which is pivoted to a bracket F on
a foundation plate or fixed to a floor or other foundation.
In the case of a weighing platform applied to and forming a part or the whole of
the bottom of a cart or a railway truck, the bracket of this or any other
suitable form, would be fixed to the frame or body of the cart or truck as
described in the Specification of my Patent No. 4813 of 1890. A projection A'
on the lever A receives the downward pressure of the platform D and the
depression of the arm A causes the rubber or wooden or other pad C or gripping
or interlocking surface on the other arm B to be brought against the side of a rib
on the underside of the platform D so as to jamb it in position against the opposite
inner side of the platform enclosing frame or other fixed part or against a pad C
or projection on a similar lever on the opposite side of the platform. One or more
such levers may be applied to each side of a platform. It will be noticed that the
heavier the downward pressure against the part A¹ the stronger will be the lateral
pressure by the pad C. The arm B is weighted by an arm E having a lower
projection E which when the lever is in the free position shown in Figure 2
drops upon the projection F1 on the bracket F when the platform is very slightly
raised which may be done by any suitable means. The releasing action may be
assisted by a helical spring under the projection A'. The releasing may also in
some cases be assisted by a lever or spanner applied to the fulcrum pin of the
lever A B.
Figure 1 is a side view and Figure 2ª end view of a modification in which the
pad part is jointed to the arm B and it may also be constructed with one pad
attached to two levers. In connection with weighing machine platforms and some
other applications of the invention I may introduce levers or other mechanical
appliances for raising the double armed levers and pads attached thereto or for
raising the frames carrying the latter in order to bring them up to their working
position and to lower them when liberating the platform or other object. This
action may be effected by means of connections from the lever which puts the
weighing machine into and out of weighing gear or by means of separate lever or
levers.
Figure 3 is a vertical section of another form of gripping lever applied to the
foot or leg of a table, chair or other piece of furniture. F is a box which is let in
flush with the deck cabin floor or other foundation and formed with a bracket for
the fulcrum pin of the lever A, B, and adjustable screw stop F' for the weighted
end E of the lever. The projection A' of the arm A enters a hollow in the bottom
part D of the foot or leg of the piece of furniture while the rounded end C of the
arm B enters a corresponding cavity in D which latter is thus firmly locked yet
instantly released when desired. His a catch with projection H' to prevent it from
falling forward. This catch keeps the lid G from shutting.
Figure 4 is a vertical sectional view of another form of lever for fixing the leg
or foot D of a piece of furniture to a floor. The fulcrum pin of the lever A B is
in a frame F which is let into the floor flush therewith. The weight comes on the
arm A and the grip against the leg D is caused by the arm B which may have a
projecting feather that interlocks with a corresponding groove in the leg D and
which may be formed hookshaped at top as shown or plain. When the leg D is
raised and removed the arm B drops into the frame F and lies flush therewith
forming a lid. The frame may be closed below as shown. The hookshaped arm
may be arranged to enter an interior recess in the leg D and the arm B may be
retained in its holding position by a sliding ornamental sleeve Z or other suitable
contrivance.

page_text: Figure 5 is a vertical section and Figure 6 a plan of a modified form of the last
described construction, the main difference being that the fulcrum of the lever A B
is shifted.
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 :-
First. The application and use for instant fixing in position and releasing seats,
tables and other pieces of furniture and weighing machine platforms and other
objects of double armed levers so constructed that as the weight of the object to be
fixed comes upon a horizontal arm of the lever lateral pressure is exerted against
the object to be fixed by the other arm substantially as set forth.
Second. The constructions of fixing appliances shown on the drawings.
Dated this 9th dow of Anril 1001
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.