Magazine securing assembly for stapling machines

A magazine securing assembly including a body provided with a guide hole and a pin inserted in the guide hole, a magazine pivotally connected to the pin and having a trigger plate at a middle portion thereof, and a control switch disposed at one side of the body. The control switch projects from one side of the body and has one end urging against the pin, the one end having an insert groove for retaining the pin. By manipulating the control switch, the insert groove on the control switch can be controlled to engage or disengage from the pin so that the magazine can move up or down to allow clearing of jams in a convenient and safe way.

BACKGROUND OF THE INVENTION 
1. Field of the Invention 
The present invention relates generally to a magazine securing assembly for 
stapling machines, and more particularly to a magazine securing assembly 
which is safe and convenient to operate. 
2. Description of the Prior Art 
FIGS. 4, 4A, 4B and 4C show a conventional stapling machine which 
essentially comprises a body 1 provided with an oval guide hole 12 which 
receives a pin 13, and a magazine 2 pivotally connected to the pin 13 of 
the body 1. The body 1 has a bar 15 fixedly disposed above the pin 13. The 
bar 15 has fitted thereon a torsion spring 16 which has one end urging 
against the pin 13. By pushing the magazine 2 to cause the pin 13 to 
displace towards the other end of the guide hole 12, an insert block 22 at 
a front end of the magazine 2 is disengaged from a retaining hole 14 of 
the body 1 so that it may displace downwardly with the point of connection 
as pivot. In addition, when the magazine 2 resets upwardly, the resilience 
of the torsion spring 16 causes the magazine 2 to be retained in the 
retaining hole 14 of the body 1 again. In actual use, such conventional 
stapling machines have the following drawbacks: 
1. As the magazine 2 is secured by means of the torsion spring 16, the 
torsion spring 16 must have a certain elasticity in order to be able to 
urge against the magazine 2 on the body 1 to ensure smooth stapling 
operations. Hence it requires a relatively great force to push the 
magazine 2 rearwardly when trying to clear jamming. 
2. The user may hurt his/her fingers when trying to pull the trigger plate 
21 of the magazine 2 since it requires a larger force to push the magazine 
2. 
SUMMARY OF THE INVENTION 
The present invention relates generally to a magazine securing assembly for 
stapling machines, and more particularly to a magazine securing assembly 
which is safe and convenient to operate. 
A primary object of the present invention is to provide a magazine securing 
assembly for stapling machines in which a control switch disposed at one 
side of the body of the stapling machine has one end retaining a pin of 
the body so that the user may manipulate the control switch to cause the 
magazine to engage or disengage from the body. The user only needs to 
apply a little force to manipulate the control switch, making it easy to 
clear any jamming. 
Another object of the present invention is to provide a magazine securing 
assembly for stapling machines in which the control switch may be pushed 
rearwardly so that pin may freely displace within a guide hole of the body 
to allow the magazine to move upwardly or downwardly with the point of 
connection as pivot, which is not only easy but also safe to operate. 
The foregoing objects and summary provide only a brief introduction to the 
present invention. To fully appreciate these and other objects of the 
present invention as well as the invention itself, all of which will 
become apparent to those skilled in the art, the following detailed 
description of the invention and the claims should be read in conjunction 
with the accompanying drawings. Throughout the specification and drawings 
identical reference numerals refer to identical or similar parts. 
Many other advantages and features of the present invention will become 
manifest to those versed in the art upon making reference to the detailed 
description and the accompanying sheets of drawings in which a preferred 
structural embodiment incorporating the principles of the present 
invention is shown by way of illustrative example.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
For the purpose of promoting an understanding of the principles of the 
invention, reference will now be made to the embodiment illustrated in the 
drawings. Specific language will be used to describe same. It will, 
nevertheless, be understood that no limitation of the scope of the 
invention is thereby intended, such alterations and further modifications 
in the illustrated device, and such further applications of the principles 
of the invention as illustrated herein being contemplated as would 
normally occur to one skilled in the art to which the invention relates. 
With reference to FIGS. 1 and 2, the present invention comprises a body 1, 
a magazine 2 pivotally provided at a bottom end of the body 1, and a 
control switch 3 installed at one side of the body 1. 
The body 1 includes a groove 11 at one end that may just retain the control 
switch 3. The body 1 is further provided with an oval guide hole 12 for 
receiving a pin 13, and a retaining hole 14 at the other end at a lower 
portion. 
The magazine 2 is pivotally mounted on the pin 13 and has a trigger plate 
21 at a middle portion thereof. The magazine 2 further has an insert block 
22 at a front end which may just engage the retaining hole 14 of the body 
1. 
The control switch 3 has one side projecting from the body 1, with the 
other side urging against the pin 13. The control switch 3 has a recessed 
retaining portion 32 at a middle portion for retaining the body 1. 
Furthermore, that side of the control switch 3 urging against the pin 13 
is provided with an insert groove 31 that may just retain the pin 13. 
By manipulating the control switch 3, the insert groove 31 thereof may 
disengage or engage the pin 13 so that the magazine 2 may displace 
upwardly and downwardly using the point of connection as pivot, allowing 
jam clearing in a convenient and safe way. 
When the stapling machine is in a striking state, as shown in FIGS. 3A and 
3B, the control switch 3 is located at the bottom end of the groove 11 of 
the body 1, and the insert groove 31 of the control switch 3 urges the pin 
13 to the left end of the guide hole 12, so that the pin 13 is retained 
and positioned in the insert groove 31. At the same time, the insert block 
22 at the front end of the magazine 2 is retained in the retaining hole 14 
of the body 1, securing the magazine 2 on the body 1 (see FIG. 3A). In 
addition, by pulling the control switch 3 upwardly, so that the pin 13 
disengages from the insert groove 31, the pin 13 may freely displace 
within the guide hole 12. At this point, by pushing the trigger plate 21 
to the rear to bring the magazine 2 and the pin 13 to the right end of the 
guide hole 12, the insert block 22 of the magazine will disengage from the 
retaining hole 14 of the body 1 so that the magazine 2 may turn downwardly 
with the point of connection as pivot (see FIG. 3B) and allow jam 
clearing. 
In summary, the present invention has the following advantages: 
1. By manipulating the control switch 3 that projects from the body 1 and 
engages the pin 13, the user can easily control the magazine 2 to engage 
with or disengage from the body 1. The user only needs to apply a little 
force to manipulate the control switch. 
2. As the pin 13 can freely displace within the guide hole 12 after the 
control switch 3 is pulled upwardly, the magazine 2 can be turned upwardly 
or downwardly with the point of connection as fulcrum. Such operation is 
not only easy but also safe. 
It will be understood that each of the elements described above, or two or 
more together may also find a useful application in other types of methods 
differing from the type described above. 
While certain novel features of this invention have been shown and 
described and are pointed out in the annexed claim, it is not intended to 
be limited to the details above, since it will be understood that various 
omissions, modifications, substitutions and changes in the forms and 
details of the device illustrated and in its operation can be made by 
those skilled in the art without departing in any way from the spirit of 
the present invention. 
Without further analysis, the foregoing will so fully reveal the gist of 
the present invention that others can, by applying current knowledge, 
readily adapt it for various applications without omitting features that, 
from the standpoint of prior art, fairly constitute essential 
characteristics of the generic or specific aspects of this invention.