Elongated-member-driving apparatus – With interlock means
Patent
1979-09-19
1982-09-07
Bell, Paul A.
Elongated-member-driving apparatus
With interlock means
173119, 173DIG1, 227130, B25C 104
Patent
active
043479634
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a hydraulic nailing pistol, the reciprocating movement of the nail driver being provided by hydraulic operating cylinders, which are equipped with force or energy accumulators. In the inventive device, all functions are built into the movable part of the pistol with simple means while retaining small dimensions and comfortably low weight, the tool developing great power during nailing.
BRIEF DESCRIPTION OF THE DRAWINGS
An embodiment of a nailing pistol in accordance with the invention is described below in conjunction with the attached drawing, in which:
FIG. 1 shows the pistol seen from one side, and partly in section.
FIG. 2 is a fragment of the operating slide and the structure controlling its movement. It should be understood, however, that the invention is not to be limited to that which is apparent from the drawing as many modifications can prevail within the purview of the invention.
DETAILED DESCRIPTION
A nailing pistol N includes a frame F having a manually engageable handle portion H at one end thereof and a nail magazine C at the other end thereof. The nail magazine C is adapted to house plural nails therein. The nail magazine C has a pair of magnetic magazine rollers 23 capable of magnetically holding a nail as they are rotated to bring a nail into alignment with the nail driver 5.
A guide cylinder 26 is provided in the frame F and reciprocally houses a nail driving piston rod 5 therein. The piston rod has a piston head 44 at one end thereof. The piston rod 5 is axially aligned with the not-illustrated outlet opening from the nail magazine C. The guide cylinder 26 communicates through a reservoir chamber D with a transversely extending chamber 45 in the frame F. A starting valve 3 is reciprocally mounted in the chamber 45 against the urging of a spring 7 butted against an abutment member 9. The starting valve 3 has a transversely extending opening 27 therein initially out of alignment with the reservoir chamber D.
A first energy accumulating chamber 46, hereinafter referred to as the chamber A, is provided in the frame F and reciprocally houses therein a piston 4. A spring 6 is provided between the piston 4 and an abutment member 8. The chamber A is connected to the chamber 45 and is preferably axially aligned with the reservoir chamber D. The opening 27 is initially out of alignment with the connection between the chamber A and the chamber D.
A second energy accumulating chamber 47, hereinafter referred to as the chamber B, is provided on the frame F and is located adjacent the nail magazine C. A piston 11 is reciprocally mounted in the chamber 47. A spring 12 is provided between the piston 11 and an abutment member 10. A passageway 48 is connected to and extends between the chamber B and the guide cylinder 26. Thus, as the piston 44 is moved axially along the length of the guide cylinder 26, hydraulic fluid between the periphery of the piston rod 5 and the internal surface of the guide cylinder 26 is urged through the passageway 48 into the chamber B to push the piston 11 toward the abutment member 10 against the urging of the spring 12. This operation will be explained in further detail below.
An inlet opening P is provided in the frame F. A check valve 14 is provided in the inlet P. An outlet opening T is also provided in the frame F adjacent the inlet opening. The inlet opening P is connected to a not-illustrated source of pressurized hydraulic fluid. A passageway 41 interconnects the inlet P to the chamber A through an opening 42 in an operating slide 2 in a first position thereof. A passageway 49 connects the chamber D to the outlet T through an opening 43 in the operating slide 2. When the opening 42 interconnects the inlet P to the passageway 41, the opening 43 also provides connection between the passageway 49 and the outlet T.
The operating slide 2 also has a further opening 52 therein. A passageway 53 communicates through a groove 51 in the periphery of the operating slide 2 with the opening 43. The opening 52 is initially nonal
REFERENCES:
patent: 2559478 (1951-07-01), Stone
patent: 3888404 (1975-06-01), Ramspeck et al.
patent: 4078409 (1978-03-01), Brown et al.
LandOfFree
Hydraulic nailing machine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic nailing machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic nailing machine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1338871