Improvements in Covers for Tubs and other Vessels or Packages.
Year: 1892

page_text: Date of Application, 6th Oct., 1892-Accepted. 12th Nov.. 1802
COMPLETE SPECIFICATION.
Improvements in Covers for Tubs and other Vessels or Packages.
I, HENRY CONVERSE CARTER, of 140, Reade Street, in the City County and
State of New York, United States of America, Merchant, 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 covers for butter and other like tubs, boxes, or packages
which are made up in sections one of which, that occupies an intermediate position,
is of wedge-sliape and fitted to slide in and out between the adjacent sections for
the purpose of tightly closing the cover to its place and removing the same when
required and whereby nails, clasps, or tin and other like fastenings for securing the
cover, may be dispensed with.
The invention consists in a cover of this description. of novel construction,
substantially as hereinafter described and pointed out in the claims.
Reference is to be had to the accompanying drawings, forming part of this
Specification, in which
1
Figure represents a view in perspective of a butter or other like tub having
my improved cover applied and which is represented as closed to its place in
the tub.
Figure 2 is a perspective view of the cover removed and partly broken
away and
Figure 3 is a view in perspective of the tub with the cover removed.
Similar letters of reference indicate corresponding parts in all the views.
.
A is the tub which may be of any suitable size and shape, or it might be a cask,
The
barrel, or other package to be closed at its end by a removable cover.
opening end of this tub A is internally shouldered as at b, to receive and support
the cover which is represented as made up of three pieces or sections B, B, C.
The inner surfaces of the projecting walls or end rim portion of the tub are
bevelled so as to present an enlarged area at the shoulder b, in order to form a
locking recess for the correspondingly or reversely bevelled edges of the
sections B B of the cover when the latter are driven home by the wedge section C
and so prevent the cover from slipping out. The top of the cover when in place
lies flush with the top or end rim c of the vessel, so as to present a smooth even
surface. Recesses d d are cut in the rim c on opposite sides of the vessel for the
ends of the wedge section C to pass in and out of. This wedge C, while an inde-
pendent section of the cover extending, when driven inwards, over the end of the
vessel and through the recesses d d, is connected on each of its opposite side edges
by an attached longitudinally-slotted web-piece e with the cover sections B B on
their inner edges by said slotted web-pieces entering within longitudinal grooves ff
in the inner edges of the sections B B and being secured therein with freedom to
slide back and forth to a limited extent as the wedge C is moved in or out by
studs 9, which may either be rivets, screws, or pins, passing through the grooved
portions of the sections B B and through the slotted web-pieces e, only one of
which latter is here shewn. Each slotted web-piece e may, if desired, be made of
a piece of bent wire, as shewn, or it may be otherwise constructed.
Supposing the cover to be fitted and closed to its place, as in Figure 1, then in
order to remove it all that is necessary is to force or slide the wedge-section C partly
out from between the sections B B as far as certain of the stops or studs g g
passing through the slotted webs e will permit as shewn in Figure 2. This will
contract or draw the sections B B towards each other, so as to clear the bevelled
rim c when the whole cover may be lifted off by using the projecting end portion
of the wedge C as a handle. The same use may be made of the projecting end
DO37

page_text: between the 3 parts is established by means of 3 rods 7, 8 and turnable on a
common centre a² (Fig. 5). Rod is connected with A' by means of a screw a',
rods with B¹ by means of screw i and rod t with camera C or C¹ by some suitable
means, the parts being fitted and disposed in such a manner that during the
operation the parts do not alter their positions relatively to each other.
Figs. 6, 7 & 8 which are side views while Fig. 5 is a front view, shew the
various angles at which the parts may be placed relatively to each other. In
Fig. 8, lever s ordinarily carrying the holder is shewn in a position at which it
may be supported against the shoulder. of the operator who otherwise holds the
instrument in the left hand, while the sketch book E may be placed on the
board A. This arrangement is especially useful for landscape copying, the land-
scape being represented by the arrow m.
It is obvious that when the distance from the object m to the camera is equal to
the distance from the camera to the drawing board, the projection will be the
natural size and that accordingly as these distances are altered the projection will
be either an enlargement or a reduction of the original object.
"
In order now to be able to determine whether the apparatus hereinafter called
Dikatopter," is properly arranged and also in order to be able to determine the
proportionate size of the projection relatively to the original I cause certain
markings to be made on the boards A and B or A' and B. respectively, as shewn
in Figs. 9 and 10. These markings take the form of parallel lines. The centre
lines 1 on B and I on A are square with the eyehole of the camera. Lines 2 and 3
respectively are equidistant from the centre line 1, and so are lines II and III
from I, lines 3 and III being also equidistant, relatively to each other from the
céntre.
The distance of lines 2 from the centre line is arranged at two thirds the distance
of lines II from their centre line.
When therefore the apparatus is properly set up, the eye should see the centre
lines 1 and I as true continuations of each other, and when the distances between
camera and projection are equal then the lines 3 should appear as true continuations
of lines III and in that case the projection will be the natural size of the original.
When on the other hand lines 2 appear as truc continuations of lines III then the
distance between camera and original is three times less than the distance between
camera and projection-and the original must therefore be just three times larger
than the projection.
In projecting landscapes and large objects the lines of perpendicular objects,
such as for instance buildings should be parallel with the lines on the board or a
skellet as in Fig. 4, may be used to obtain a true perpendicular.
In Figs. 11 and 12 is shewn in plan how the Dikatopter may be folded the
hollow produced between the two boards being utilised for storing materials camera
and the like.
Having now particularly described and ascertained the nature of my invention
and in which manner it may be performed I declare that what I claim is :
1. An improved apparatus, called " Dikatopter," for executing drawings by
means of a camera lucida constructed and disposed substantially in the manner
described and shewn in the drawings.
2. In such apparatus the means for proving the accuracy of the relative positions
of the various parts to each other and for determining the size proportions of
original and projection to each other, consisting in a system of parallel lines marked
and arranged substantially as described.
Dated this 6th day of
BONNE & Co.,
57-8, Chancery Lane, W.C.,
Authorised Patent and Trade Mark Agents.