Abstract: A nailing machine includes a switch operating member 40 for setting to switch respective modes of single striking and continuous striking, and pivot restricting means for restricting a contact lever 34 for operating a valve stem 19 of a start valve 15 from being pivoted in cooperation with the switch operating member 40 set to switch to the single striking mode. By the pivot restricting means, an amount of pivoting the contact lever 34 at a position of operating to draw a middle of a trigger lever 31 in the single striking mode is restricted, and a valve stem 19 is maintained to maintain a state of operating to make the start valve 15 ON. Therefore, a reaction of the nailing machine in the continuous striking is reduced, further, dribble in the single striking mode is prevented from being brought about. In addition thereto, an erroneous operation in connecting an air chuck is prevented.

Abstract: An injection nozzle 21 for injecting a combustible gas into an annular combustion chamber 10 formed above a driving cylinder 4 is formed so as to face the interior of the combustion chamber 10, is which a rotary fan 24 for mixing a combustion gas supplied into the combustion chamber 10 and air is provided. A vortex generator 33 is formed in an upstream side of the injection nozzle 21 in an air flow formed in the combustion chamber 10 by the rotary fan. Vortexes are generated near the injection nozzle 21 in the combustion chamber 10 by the vortex generator 33, so that the mixing of the combustion gas and air is promoted.

Abstract: The guide rods 25, 26 extending straight along the discharge port 17 are fixed to the contact member 24, and this contact member 24 is retained slidably on the nose 16 via the guide rods 25, 26. The nose extension 23 is formed at the free end of the discharge port 17 so as to be integral with the nose 16 so that the nose extension covers the outer circumferential surface of the discharge port 17. The contact member 24 is held in the annular space formed between the nose extension 23 and discharge port 17, the contact member 24 being provided so as to project from free end of the nose extension.

Abstract: A nail feeding mechanism is provided with a front feed claw (9) and a rear feed claw (10). The rear feed claw (10) is provided with a contact portion (10b) on a front side of a claw portion (10a). A face of the contact portion (10b) to be brought into contact with connected nails is wider than a gap between nails in a width thereof and cannot enter between nails. When the front feed claw (9) is moved rearward and catches a final nail (TN1) of a first row, the contact portion (10b) and the claw portion (10a) move into a nail path, the contact portion (10b) enters between the final nail (TN1) of the first row and a front nail (FN2) of a second row and the claw portion (10a) enters a rear side of the front nail (FN2) of the second row.

Abstract: A nail feeding mechanism is provided with a front feed claw (9) and a rear feed claw (10). The rear feed claw (10) is provided with a contact portion (10b) on a front side of a claw portion (10a). A face of the contact portion (10b) to be brought into contact with connected nails is wider than a gap between nails in a width thereof and cannot enter between nails. When the front feed claw (9) is moved rearward and catches a final nail (TN1) of a first row, the contact portion (10b) and the claw portion (10a) move into a nail path, the contact portion (10b) enters between the final nail (TN1) of the first row and a front nail (FN2) of a second row and the claw portion (10a) enters a rear side of the front nail (FN2) of the second row.

Abstract: A nail feeding mechanism is provided with a front feed claw (9) and a rear feed claw (10). The rear feed claw (10) is provided with a contact portion (10b) on a front side of a claw portion (10a). A face of the contact portion (10b) to be brought into contact with connected nails is wider than a gap between nails in a width thereof and cannot enter between nails. When the front feed claw (9) is moved rearward and catches a final nail (TN1) of a first row, the contact portion (10b) and the claw portion (10a) move into a nail path, the contact portion (10b) enters between the final nail (TN1) of the first row and a front nail (FN2) of a second row and the claw portion (10a) enters a rear side of the front nail (FN2) of the second row.

Abstract: In stick type connected nails, connecting bands are glued to two portions, that is, upper ends and lower ends of shaft portions of nails which are arranged in parallel in an equidistant manner so as to connect the nails to each other. By providing the connecting bands at two portions, that is, the upper and lower portions, when plural sheets of connected nails are loaded in a multiple loading type nail magazine in a superposed manner, heads and distal end portions of the neighboring connecting nails are not entangled in a staggered manner. Hence, the smooth nail feeding can be realized.

Abstract: In stick-type connected nails, connecting bands are glued to two portions, that is, upper ends and lower ends of shaft portions of nails which are arranged in parallel in an equidistant manner so as to connect the nails to each other. By providing the connecting bands at two portions, that is, the upper and lower portions, when a plural sheets of connected nails are loaded in a multiple loading type nail magazine in a superposed manner, heads and distal end portions of the neighboring connecting nails are not entangled in a staggered manner. Hence, the smooth nail feeding can be realized.

Abstract: A nail feeding mechanism is provided with a front feed claw (9) and a rear feed claw (10). The rear feed claw (10) is provided with a contact portion (10b) on a front side of a claw portion (10a) . A face of the contact portion (10b) to be brought into contact with connected nails is wider than a gap between nails in a width thereof and cannot enter between nails. When the front feed claw (9) is moved rearward and catches a final nail (TN1) of a first row, the contact portion (10b) and the claw portion (10a) move into a nail path, the contact portion (10b) enters between the final nail (TN1) of the first row and a front nail (FN2) of a second row and the claw portion (10a) enters a rear side of the front nail (FN2) of the second row.

Abstract: In stick-type connected nails, connecting bands are glued to two portions, that is, upper ends and lower ends of shaft portions of nails which are arranged in parallel in an equidistant manner so as to connect the nails to each other. By providing the connecting bands at two portions, that is, the upper and lower portions, when a plural sheets of connected nails are loaded in a multiple loading type nail magazine in a superposed manner, heads and distal end portions of the neighboring connecting nails are not entangled in a staggered manner. Hence, the smooth nail feeding can be realized.

Abstract: A supply mechanism for connected nails in a nailing machine is provided. The nailing machine includes a driver for driving the connected nail and a nose having a nail introduction portion and accommodating the driver. The supply mechanism includes a magazine and a pressing member. The magazine includes a nail guide surface connected to the nail introduction portion of the nose, and the nail guide surface has a corner portion on an upper end thereof for supporting nail heads of the connected nails. The pressing member is opposed to the nail guide surface of the magazine. The connected nails are stored in the magazine and held between the nail guide surface and the pressing member, and the connected nails contacted with the nail guide surface are supplied to the nose of the nailing machine.

Abstract: A magazine includes a nail guide surface and a movable guide wall. The nail guide surface is linear and continuous to a nail introducing opening and has a shoulder for supporting the nail heads of a connected nail assembly. The movable guide wall is confronted with the nail guide surface. In the magazine, a plurality of connected nail assemblies are loaded and placed in side-by-side relation, while being in contact with each other, between the nail guide surface and the movable guide wall. The plurality of connected nail assemblies are pressed against the guide surface of the magazine by pressing members provided on the movable guide wall. The movable guide wall is turned, for opening and closing, between a position being confronted with the nail guide surface of the magazine and a position at which the nail guide surface is opened.

Abstract: A magazine includes a nail guide surface and a movable guide wall. The nail guide surface is linear and continuous to a nail introducing opening and has a shoulder for supporting the nail heads of a connected nail assembly. The movable guide wall is confronted with the nail guide surface. In the magazine, a plurality of connected nail assemblies are loaded and placed in side-by-side relation, while being in contact with each other, between the nail guide surface and the movable guide wall. The plurality of connected nail assemblies are pressed against the guide surface of the magazine by means of a pressing members provided on the movable guide wall. The movable guide wall is turned, for opening and closing, between a position being confronted with the nail guide surface of the magazine and a position at which the nail guide surface is opened.

Abstract: A supply mechanism for connected nails in a nailing machine is provided. The nailing machine includes a driver for driving the connected nail and a nose having a nail introduction portion and accommodating the driver. The supply mechanism includes a magazine and a pressing member. The magazine includes a nail guide surface connected to the nail introduction portion of the nose, and the nail guide surface has a corner portion on an upper end thereof for supporting nail heads of the connected nails. The pressing member is opposed to the nail guide surface of the magazine. The connected nails are stored in the magazine and held between the nail guide surface and the pressing member, and the connected nails contacted with the nail guide surface are supplied to the nose of the nailing machine.

Abstract: In stick-type connected nails, connecting bands are glued to two portions, that is, upper ends and lower ends of shaft portions of nails which are arranged in parallel in an equidistant manner so as to connect the nails to each other. By providing the connecting bands at two portions, that is, the upper and lower portions, when a plural sheets of connected nails are loaded in a multiple loading type nail magazine in a superposed manner, heads and distal end portions of the neighboring connecting nails are not entangled in a staggered manner. Hence, the smooth nail feeding can be realized.

Abstract: A deflecting yoke gradient adjusting apparatus provided by the present invention comprises a base for mounting a CRT, positioning means for adjusting the position of the CRT mounted on the base, horizontal positioning means for positioning the deflecting yoke positioned within the horizontal positioning means which can move in a horizontal direction toward or away from the deflecting yoke tentatively mounted on the CRT and vertical positioning means for positioning the deflecting yoke in a direction perpendicular to the surface of the base. With the deflecting yoke gradient adjusting apparatus provided by the present invention, the efficiency of work to install a deflecting yoke in a cathode ray tube (CRT) employed in typically in a television, a projection type projector or a rear projection type projector and to adjust the position of the deflecting yoke can be enhanced.

Abstract: In a television receiver, shading correction is carried out without deteriorating the S/N ratio. In a television receiver including a CRT, and a shading corrector for supplying an image signal to a cathode of the CRT (cathode-ray tube) and for correcting brightness inequalities of an image formed on a fluorescent screen by way of electron beams which are increased/decreased in response to a change in the potentials applied to a first grid of the CRT, the shading corrector supplies a shading correction signal to the first grid.

Abstract: To suppress electromagnetic radiation without exerting any harmful influence upon both S/N ratio and dynamic range, a pulse width modulation circuit includes an integrating circuit for integrating an input signal applied to an input terminal with respect to time, a comparing circuit connected to the integrating circuit and having hysteresis characteristics, a feedback circuit for feeding back the output of the comparing circuit to an input of the integrating circuit, and an amplitude modulation circuit, provided in a loop including the integrating circuit and the comparing circuit, for implementing amplitude modulation to modulate a frequency of the output of the comparing circuit. Further, the output of the comparing circuit can be fed-back to the integrating circuit via an amplitude modulation circuit. Alternatively, the amplitude of the output of the integrating circuit is first modulated by the amplitude modulation circuit, before being applied to the comparing circuit.