close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2114779

код для вставки
April 19, 1938.
J_ H JOSEY
2,114,779
JACK
Filed Feb. 18, 1957
2 Sheets-Sheet l
_
170,277
Inventor
‘70:5’?
By
'4 Aiiorneys
April 19, 1938.
J. H. JosEY
'
2,114,779
JACK
Filed Feb. 18, 1937
2 SheetS--S/he<=:1~ 2
Attorneys
2,114,779
atented Apr. 19, 1938
TES
PATENT OFFICE ‘
2,114,779 _
JACK
John H. Josey,’ Moscow, Tex.
Application ‘February 18, 1937, Serial No. 126,491.
4 Claims.
(Cl. 254-46)
7 This invention relates to ‘jacks of the type em
ployed for laying ceiling strips, floor boards or
sidings; and an object of the present invention‘ is
to provide a jack of this character which will be
at H! between a pair of plates l5 formed with
rack segments l6.
At one vertical edge thereof the plates l5 are
provided with outstanding ?anges through the
medium of which‘and bolts or the like I‘! said 5
plates are secured to a block memberIIB that
is bolted as at I9 to outstanding flanges 20 pro
jecting from the-sides of the member 5 at one end
of the latter.
The invention together with its objects andad
The hand lever I3 is equipped with a conven- v1o
‘l0 vantages will be best understood from a study of
the following description taken in’ connection ‘ tional detent 2| that cooperates with the rack
segments 16 for securing the lever 13 at the de
with the accompanying drawings wherein:-—
Figure 1 is a side elevational view of the jack sired position of adjustment. Adjacent its piv
embodying the features of the present invention. oted end the leverv I3 is connected with the inner
Figure 2 is an end elevational view of the jack. end of the ‘slide 6 through the medium of a 15
link 22.
.
Figure 3 is a top plan View of‘ the jack.’
In the form of the invention shown in Figures
Figure 4 is a transverse sectional View taken
1'00 5, inclusive, the jack is provided with an an
substantially on the line 4-4 of Figure 3.
Figure ‘5 is a perspective view of the head end choring device in the form of a clamp consisting
of a'pair of jaw members 23 pivoted to the plate ‘ 20
:20 of the jack.
>
Figure 6 is a fragmentary side elevational view [8 as at 24 and at the pivots 24 connected by a
link 25. A pair of levers 26 are also pivoted
illustrating a slightly modi?edform -0f the in
together and to the plate H3 at one end of the
Figure 7 is a perspective view of an anchoring members 26 as at 21 and adjacent said pivoted
end the levers 26 are connected together through i25
:55 member hereinafter more fully referred to.
the medium of a coil spring 28.
, Referring to the drawings by reference nu
The spring 28 has its respective opposite ends
meralsrit will be seen that my‘ improved jack suitably secured to one end of pins 29 that ex
comprises a substantially U-shaped body bar 5 tend through the lever 26 and have their free ends
vin which an inverted T bar or slide member 6 has arranged to engage the inner or concave edges :30
'a‘sliding ?t.
‘
of the shanks 23w of the jaw members 23.
At the upper edges thereof the sides of the
Levers 26 are also» provided with laterally ex
member 5 are provided with outstanding ?anges tending pins 30 that are arranged to engage the
and bolted or otherwise secured to the ?anges convex edges of the shanks 23a of jaws 23 for
one end of the member 5 and as indicated gen
urging the shanks 23d inwardly in a manner £55
ml at
erally at ‘l is a guide plate 8 that serves as a to spread the jaws 23 apart.
.
retainer for the slide bar 6.
,
From the above, it will be apparent that when
Secured to one end of the slide bar 6 through‘ laying, for example sub-?ooring, the channel _
the medium of angle brackets or the, like 9 is a member 5 rests longitudinally on. a rafter as:for
5 positive and e?icient in operation, and which is
otherwise an improvement, in general, over the
types of jacks now designed or resorted to for
such work.
vention.
"40
‘
head member l0.
>
'
"
'
'
‘
_,
'
As shown in Figure5 the head member ID is
hollow beingv open along one side and at the
bottom thereof to accommodate a work engag
ing element or block, such as for example, a piece
45 of flooring or the like shown in broken lines in
Figure 5 and indicated by the reference numeral
l I. To secure the block I l within the head mem
ber It said member at one end is provided with
a binding screw I2. As shown in Figure 5 the
example suggested in Figure 2 wherein the rafter ‘40
is illustrated by broken lines and indicated by
the letter R. To anchor the jack in place the
operator presses down on the levers 26 and as
the levers swing downward against the action
of spring 28 pins 29 act on the shanks 23a. for '45
causing the latter to- swing away from one an
other and the jaws 23 to swing inwardly into
positive gripping engagement with opposite sides
of the rafter R. Next the floor plank to be laid
is positioned so that the groove-equipped edge 50
50 opposite ends of the member [0 have their inner
faces beveled to complement the beveled ends ' thereof will face the tongue equipped edge of the
previously laid plank, and the tongue of the
of block I I.
For feeding or retracting the slide 6 relative plank to be laid intermediate the ends of the
to the ?xed member 5 there is provided a hand plank is engaged in the groove of the block II.
55 lever I3 that is pivoted adjacent its lower end as The operator, the floor jack being anchored in 55
2
2,114,779
position, then releases lever l3 and pushes or
pulls on the lever swinging the same in a counter
clockwise direction for projecting the slide 6 thus
forcing the plank being laid into positive edge
engagement with the previously laid plank, hold
ing the plank being laid in this position until said
plank has been nailed to the rafter.
When the
plank has been nailed in place, the operator then
retracts the slide 6 by swinging the lever l3 in
10 a reverse direction.
Obviously this operation is repeated in the lay
ing of each successive ?oor plank.
Also the operation is substantially the same
when placing sidings or when laying top-?oor
15 ing.
When laying top-?ooring, however, instead of
using an anchoring clamp such as shown in Fig
ures l to 5, inclusive and herein described in de
tail anchoring means such as shown in Figures
6 and 7 may be resorted to. In these ?gures the
anchoring means is shown as consisting of a plate
34 provided at one edge with an upstanding ?ange
35 apertured as at 36 to accommodate bolts or
other suitable fastening elements 31 through the
medium of which the ?ange 35 is secured to the
plate E8 of the jack.
The ?ange 35 projects beyond the lateral edges
of the plate 34 and at its respective opposite ends
is formed to present right angularly disposed
3O downwardly directed penetrating prongs 31,;
Thus when using this form of the invention for
the purpose of laying, as above suggested, top
?ooring plate 34 rests ?atly on the sub-?ooring
and a downward pressure being exerted thereon
the prongs 3T bite into or penetrate the wood of
the sub-?ooring for anchoring the jack in posi
tion.
It will also be seen that in both forms of the
invention the plate I8 is braced through the
40 medium of inclined brace bars 38 which at one
end are secured as at 39 to the opposite sides
of the member 5 and at their upper ends are se
cured through the medium of the uppermost bolts
I‘! to the outstanding ?anges of the rack plates
45 l5, which bolts, as previously described serve also
to secure the plates Hi to the plate l8.
To accommodate the brace bars 38 the ?anges
of the member 5 are notched as at 40.
It is thought that a clear understanding of the
50 construction, utility and advantages of an inven
tion of this character will be had without a more
detailed description.
Having thus described the invention, what is
vided with a detent cooperable with the rack
plate for securing the lever at the desired posi
tion of adjustment and link means operatively
connecting said lever with said T bar.
2. A jack for laying ?oors and analogous work,
and comprising a channel member, a slide mem
ber having a working bit in said channel mem
ber, a work engaging head on one end of said
slide member, an upstanding plate secured to
one end of the channel member, a rack segment 10
mounted on and extending inwardly from one side
of said plate, a lever pivotally mounted on said
rack segment and provided with a detent cooper
able with the segment for securing the lever at
the desired position of adjustment, a motion 15
transmitting link operatively connecting said lever
with said slide member for transmitting move
ment of the lever to the slide member, a work
engaging plate provided at one edge thereof with
a flange secured to the aforementioned vertical 20
plate, and said ?ange of the work engaging plate
having angularly disposed ends fashioned to pro
vide downwardly projecting penetrating points
adapted to bite into the work for anchoring the
jack in position.
25
3. In a ?oor jack, a member provided at one
end thereof with means to engage a. floor beam,
a second member mounted on the first mentioned
member for sliding movement longitudinally of
the latter, a lever pivotally mounted on the ?rst 30
member and having means engaging the sliding
member for shifting the latter and for securing
said sliding member at the desired position of
adjustment, and a head on one end of said slid
ing member, said head being open at the front 35
and under side thereof and having end walls pro
vided with beveled inner faces, a work engaging
element
beveled
faces of
prevent
through
arranged within said head and having
end faces complemental to the beveled
the end walls of said head whereby to
passage of said work engaging element
the open underside of said head.
4. In a ?oor jack, a member provided at one
end thereof with means to engage a ?oor beam,
a second member mounted on the ?rst mentioned 45
member for sliding movement longitudinally of
the latter, a lever pivotally mounted on the ?rst
member, means operatively connecting said lever
with said sliding member for shifting the latter
and for securing the sliding member at the de 60
sired position of adjustment, and a head on one
end of said sliding member, said head being open
at the front and under side thereof and having
claimed as new is:
end walls provided with beveled inner faces, a
1. A jack for laying ?oors and analogous work,
and comprising a substantially channel member,
work engaging element arranged within said head 65
and having beveled end faces complemental to
a T bar having a sliding fit in the channel of
said member, said T bar being provided at one
end with a work engaging head, a vertical plate
60 secured to the channel member at one end of the
latter, a clamp mounted on said plate and in
the beveled faces of the end walls of said head
whereby to prevent passage of said work engag
ing element through the open underside of said
head, and a binding screw threaded through one 60
of the end walls of said head to bind against the
adjacent end of said work engaging element to
positively secure the latter Within said head.
JOHN H. JOSEY.
55
cluding a pair of clamping jaws, a vertical rack
segment extending inwardly from said plate, a
hand lever pivoted to said rack plate and pro
Документ
Категория
Без категории
Просмотров
0
Размер файла
378 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа